WASHINGTON (Reuters) - The U.S. House of Representatives voted overwhelmingly on Tuesday to recognize the mass killings of Armenians a century ago as a genocide, a symbolic but historic vote instantly denounced by Turkey.

FILE PHOTO: The U.S. Capitol building is seen reflected in a puddle at sunrise on the day of the U.S. midterm election as voters go to the polls across the country to elect 33 U.S. senators and all 435 members of the U.S. House of Representatives in Washington, U.S., November 6, 2018. REUTERS/Jim Bourg

The Democratic-controlled House voted 405-11 in favor of a resolution asserting that it is U.S. policy to commemorate as genocide the killing of 1.5 million Armenians by the Ottoman Empire from 1915 to 1923. The Ottoman Empire was centered in present-day Turkey.

The vote marked the first time in 35 years that such legislation was considered in the full House, underscoring widespread frustration in Congress with the Turkish government, from both Democrats and President Donald Trump’s fellow Republicans.

Shortly after the Armenian genocide vote, House lawmakers from both parties also overwhelmingly backed legislation calling on Trump to impose sanctions on Turkey over its offensive in northern Syria, another action likely to inflame relations with NATO ally Turkey.

The fate of both measures in the Senate is unclear, with no vote scheduled on similar legislation.

Turkey accepts that many Armenians living in the Ottoman Empire were killed in clashes with Ottoman forces during World War One, but contests the figures and denies that the killings were systematically orchestrated and constitute a genocide.

Ankara views foreign involvement in the issue as a threat to its sovereignty.

For decades, measures recognizing the Armenian genocide have stalled in Congress, stymied by concerns that it could complicate relations with Turkey and intense lobbying by the Ankara government.

U.S. lawmakers have been fuming about Turkey, however, in recent months, because of its purchase of a Russian missile defense system in defiance of U.S. sanctions and, more recently, its incursion into northern Syria to fight Kurdish forces after Trump abruptly announced he was withdrawing U.S. troops from the area.

QUICK CONDEMNATION BY TURKEY

Turkey quickly condemned both resolutions, saying the genocide resolution “is devoid of any historical or legal basis,” and adding: “As a meaningless political step, its sole addressees are the Armenian lobby and anti-Turkey groups.”

Its Foreign Ministry said the sanctions measure, which targets senior officials and the Turkish armed forces, was “incompatible with the spirit of our NATO alliance,” and contradicted a ceasefire agreement for northern Syria reached with the Trump administration on Oct. 17.

“We urge the U.S. Congress, not to exploit bilateral issues for domestic political consumption and to act in line with the spirit of our Alliance and partnership,” the ministry said in a statement, urging the Trump administration to take action to prevent a further deterioriation in relations.

Turkey views the Kurds in northern Syria as a security threat. Many members of Congress were furious about the assault against Kurdish troops, who until recently were fighting alongside U.S. forces against Islamic State militants.

Democratic U.S. Representative Adam Schiff, whose California district is home to a large Armenian-American population, has sought passage of such legislation for 19 years. He urged support for the measure in an emotional House speech that referenced the Kurds.

“When we see the images of terrified Kurdish families in northern Syria, loading their possessions into cars or carts and fleeing their homes headed to nowhere except away from Turkish bombs and marauding militias, how can we say the crimes of a century ago are in the past?” he said.

“We cannot. We cannot pick and choose which crimes against humanity are convenient to speak about. We cannot cloak our support for human rights in euphemisms. We cannot be cowed into silence by a foreign power,” Schiff said.