This is a fine time to pick a new secretary of state and, while at it, rethink America’s relations with the world.

Whatever the arguments against President-elect Donald Trump’s pick for the job, surely the fact that Rex Tillerson has no experience in Washington-led diplomacy shouldn’t be one of them. Just consider the last few days on his predecessor’s watch.

Aden, Yemen: An ISIS-affiliated suicide bomber killed at least 48 soldiers on Saturday, part of a war that increasingly pits a vicious Iranian-backed group against Muslim Brotherhood-inspired terrorists.

Two years ago, President Obama cited Yemen as a successful model for US-led diplomacy. Was it? Well, there was a period of optimism around the beginning of peace talks. But it was brief. Arguably, UN envoy Jamal Benomar deserved the credit for that more than did John Kerry or his predecessor, Hillary Clinton.

The diplomacy collapsed anyway. War intensified. The body count climbed. Our diplomats can’t even decide if we support an old ally, Saudi Arabia, or new “ally” Iran. So the war against terror suffers.

We can’t do much worse.

Cairo, Egypt: A bomb in an Egyptian Coptic church killed at least 25 worshipers Sunday. ISIS claimed responsibility Tuesday, though the Egypt-born Muslim Brotherhood often incites against Copts.

When Gen. Abdel Fattah al-Sisi took power by force in June 2014, ousting the failed Muslim Brotherhood leadership, Egyptians largely cheered. Not so our top diplomats. State Department officials shied away from the word “coup,” yet they often chastised Sisi’s high-handed repression of the Brotherhood. As Egypt fought ISIS expansion in the Sinai, we halted weapon deliveries.

The result: ISIS is stronger. Sisi sought other global allies — notably Russia. The Muslim Brotherhood, which thrives underground, is gaining momentum again. As an Egyptian diplomat told me recently, Cairo just can’t wait until Obama’s out of office.

We can’t do much worse.

Istanbul, Turkey: Two bombs went off near a soccer stadium Saturday, killing at least 44. The PKK, a militant Kurdish group, claimed credit. Yet President Recep Tayyip Erdogan nevertheless went after Kurdish political opponents with no ties to the PKK. And he still blames America for backing a failed coup against him this summer. Turkey remains a powerful NATO member but is not much of a democracy or an ally anymore.

Obama never used American leverage to end Erdogan’s on-again-off-again cooperation with ISIS, or his war on our Kurdish allies. So our diplomats in Turkey go mostly ignored.

We can’t do much worse.

Aleppo and Palmyra, Syria: This week ISIS won back Palmyra. Its loss there earlier this year marked a rare victory for our side. Also this week, combined Russian, Iranian, Hezbollah and Syrian forces all but completed a takeover of Aleppo, once the country’s largest city, now its largest graveyard.

Future war-crimes trials, often threatened by our UN ambassadors Susan Rice and Samantha Power, haven’t impressed Syrian strongman Bashar al-Assad or his Russian allies. (Go figure.) Obama-era diplomats are fond of saying, “There’s no military solution.” Aleppo is only the latest to prove them wrong.

We lecture the Russians, who then ignore us. We implore the United Nations to do something, anything. We get nothing.

In reality, after Obama’s red line was erased, we ceded Syria to Moscow and Tehran. And as the easy recapture of Palmyra shows, they are less interested in combating ISIS than in killing Assad’s opponents.

Beyond the United Nations, Kerry has been negotiating with his Russian counterpart, Sergey Lavrov. But while the crusty Russian diplomat has a strategy, Kerry has nothing but words. This week Lavrov declared the talks a failure. Russian ambassador Vitaly Churkin on Tuesday announced an end to the Aleppo battle, adding nevertheless Russia can’t guarantee anyone’s safety there.

We can’t do much worse.

So, yes, Tillerson’s Moscow ties are a legitimate line of inquiry. But for half a decade now, Vladimir Putin has controlled the most consequential war theater of the time, not us. We also uttered little more than a pip when he swallowed a chunk of Ukraine and threatened our other allies in the former Soviet bloc.

Can an oilman with a penchant for global dealmaking but no experience in Washington diplomacy do better? Well, he can’t do much worse.