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The aircraft carriers USS Nimitz, USS Theodore Roosevelt, and USS Ronald Reagan—three of the most powerful warships in the world—have now converged on the western Pacific in a mighty show of force on the eve of President Trump’s 10-day trip to Asia. The three carriers, along with their accompanying cruisers, destroyers, and submarines—all armed with Tomahawk cruise missiles or other advanced munitions—are capable of raining immense destructive force on any nation targeted by the commander in chief. Not since 2007 has there been such a concentration of US firepower in the Asia-Pacific region. There can be only two plausible explanations for this extraordinary naval buildup: to provide Trump with the sort of military extravaganza he seems to enjoy; and/or to prepare for a pre-emptive military strike on North Korea. Ad Policy

First, about the carriers: Normally, the Pentagon stations one carrier and its support group in the western Pacific, with its homeport in Yokosuka, Japan; at present, that vessel is the Ronald Reagan. In addition, the United States has kept one carrier group in the Indian Ocean to provide air support for Army and Marine Corps ground forces in Iraq; until recently that had been the Nimitz. At present, however, the Nimitz has departed the Indian Ocean and is in the Pacific before heading back to its homeport in Washington, while its replacement ship, the Theodore Roosevelt, is also in the Pacific on its way to the Indian Ocean. But for now, all three are massed in the Pacific. The Pentagon says this is a coincidence, but it’s hard to take that seriously. Related Articles The United States and North Korea Are Edging Into Increasingly Dangerous Territory Tim Shorrock Diplomacy With North Korea Has Worked Before, and Can Work Again Tim Shorrock This Is What’s Really Behind North Korea’s Nuclear Provocations Bruce Cumings

This convergence is occurring against the backdrop of other developments that all seem to narrow the chances for finding a peaceful outcome to the current standoff between the United States and North Korea. Although the North Koreans have not tested any long-range ballistic missiles or nuclear devices for some six weeks now—very possibly out of a fear of antagonizing China (its sole remaining ally) during the 19th Communist Party Congress (now concluded)—they have shown every indication of doing so again in the future and, indeed, are talking of an above-ground nuclear test.

At the same time, the Trump administration has adopted an even more belligerent stance toward Pyongyang, both through words—largely via the president’s Twitter account—and through military moves. At the United Nations in September, Trump said of North Korean leader Kim Jong-un, “Rocket Man is on a suicide mission for himself and for his regime,” warning that if the North attacked the United States or its allies, “we will have no choice but to totally destroy North Korea.” When North Korean Foreign Minister Ri Yong-ho condemned Trump’s words, the president retorted, via Twitter, “If he echoes thoughts of Little Rocket Man, they won’t be around much longer!”

Although Trump spoke at the UN in terms of defensive action, his statements have on occasion hinted at a willingness to employ force in an offensive manner, to destroy North Korean rockets before they are launched or to destroy larger elements of the regime’s military and governing capacity. “Presidents and their administrations have been talking to North Korea for 25 years, agreements made and massive amounts of money paid…hasn’t worked, agreements violated before the ink was dry, makings fools of U.S. negotiators,” he tweeted on October 7, referring to past US efforts to negotiate the denuclearization of the North. “Sorry, but only one thing will work!” Asked later that day to explain what he meant by that, Trump told reporters, “You’ll figure that out pretty soon.” American military officials insist that an attack against North Korea would trigger retaliation leading to massive civilian casualties—certainly in the tens of thousands, quite possibly many more.

Trump’s threats to use military force against the Kim regime have repeatedly been cast into doubt by senior US military officials, who insist that any such action would inevitably trigger North Korean retaliation, in all likelihood leading to massive civilian casualties—certainly in the tens of thousands, quite possibly in much greater numbers. How far Pyongyang has progressed in its attempts to install nuclear warheads on its ballistic missiles is unknown, but it is widely believed capable of launching chemical weapons and conventionally armed missiles against South Korea and Japan, along with devastating barrages of artillery fire. The North Koreans have deployed thousands of long-range artillery pieces and multiple-rocket launchers in hardened positions just north of the demilitarized zone, many of which are thought capable of striking Seoul, the South’s capital and largest city, located just 30 miles south of the DMZ. “The bottom line is it would be a catastrophic war if this turns into a combat,” said Defense Secretary James Mattis last May.

Despite such cautioning, and much talk in the media about the likely death toll from a such clash, President Trump and his top aides appear to be planning for just such an encounter—and the Pentagon is falling in step behind them. On October 10, the White House released a little-noticed statement by the press secretary on the outcome of a meeting between Trump and his national-security team, saying “the briefing and discussion focused on a range of options to respond to any form of North Korean aggression or, if necessary, to prevent North Korea from threatening the United States and its allies with nuclear weapons”—a clear reference to preemptive attacks. Current Issue View our current issue

A further hint of such action came in testimony by Secretary Mattis and Secretary of State Rex Tillerson before the Senate Foreign Relations Committee on October 30. Asked by Senator Ben Cardin whether President Trump has congressional authorization to employ military force against North Korea, Tillerson said no, but then added, “[If] there’s an imminent threat against the United States, he has certain powers [to act].” In subsequent questioning by Senator Chris Murphy, Mattis said that he could imagine a scenario in which Trump ordered an attack on North Korea without consulting Congress, akin to the April 6 missile strike on the Syrian air base at Shayrat (supposedly intended to degrade Syria’s chemical-weapons capabilities) in response to the sarin gas attack on Khan Sheikhoun by Syrian government forces. Asked whether the mere possession of a nuclear weapon by the North could be considered an “imminent” threat, both Mattis and Tillerson declined to answer, saying it would depend on the circumstances. Most threatening, at least from Pyongyang’s perspective, is the current deployment of 12 F-35A stealth fighter jets from Utah to Okinawa’s Kadena air base.

That the Pentagon is at least preparing for such action, if not actually operating on a fixed timeline, is suggested by a host of moves in the western Pacific, in addition to the deployment of the three carriers and their accompanying battle groups. Most threatening, at least from Pyongyang’s perspective, is the deployment, now under way, of 12 F-35A stealth fighter jets from Utah to Okinawa’s Kadena air base. According to a report in The National Interest, the F-35s would provide “a useful tool to strike at North Korea’s air defenses and command and control nodes during a war,” opening the air space for attacks by other US aircraft in the region, including F-15s and B-1 bombers. Two US submarines have also been reported in the region, the USS Tucson, with 12 vertical launch tubes for Tomahawk cruise missiles, and the USS Michigan, equipped with Tomahawks and a team of Special Forces operators.

From Pyongyang’s perspective, all this has to be viewed as a provocative threat, if not a buildup for a coming US attack. How will Kim respond? Given the high priority his regime places on national security and survival, it must give at least some credence to the latter. This could mean taking preventive measures of various sorts, such as putting its forces on high alert or moving missiles into launch positions—steps that could be interpreted by American officials as indication of an imminent North Korean attack, and so trigger US pre-emptive strikes. None of this need be planned and intentional; it could also occur through misperception and miscalculation. “Once you start moving pieces around on the board, things become a lot more dangerous,” military analyst Adam Mount of the Federation of American Scientists told me in a telephone interview. The most promising move against Trump’s march to war is a bill introduced by Representative John Conyers and Senator Ed Markey that would ban a pre-emptive strike without congressional approval.

The timeline here is short: American naval power will peak over the next month or so, during and after Trump’s visit to Asia and while all three US carriers are in the region. This is when the risk of miscalculation will be greatest, and so the need for restraint most imperative. Although no one on the Trump team seems to be cognizant of the monumental dangers involved, some on Capital Hill are beginning to awaken to the extent of the peril. Trump is setting us “on the path to World War III,” Senator Bob Corker, the Republican chairman of the Senate Foreign Relations Committee, declared on October 8. Senator Jeff Flake, another Republican, has warned of Trump’s “recklessness.”

It is with this in mind that some lawmakers have sought to impose roadblocks on Trump’s ability to initiate war against North Korea without congressional consultation and approval. Most promising of these is the “No Unconstitutional Strike Against North Korea Act of 2017,” introduced by Democrats John Conyers in the House and Ed Markey in the Senate, with the support of two Republicans among 60 backers in the House. The bill would ban the Defense Department from using funds to launch a military strike against North Korea without the prior approval of Congress or as a response to an attack against the United States or its allies.

A similar bill was introduced on October 31 by Senator Chris Murphy, with the support of Senators Tammy Duckworth and Brian Schatz. Both bills are wholly in tune with the views of most Americans, more than two-thirds of whom say in polls they believe the United States should attack North Korea only if the North attacks first. Although neither bill is likely to pass without additional Republican support, calls and letters to members of Congress expressing support for these measures may be the best way for ordinary citizens to express their desire for peace at this moment of extreme peril.