US President Donald Trump grudgingly signed into law new sanctions against Russia on Wednesday, a move Moscow said amounted to a full-scale trade war and an end to hopes for better ties with the Trump administration.
Congress overwhelmingly approved the legislation last week, passing a measure that conflicts with the Republican president's desire to improve relations with Moscow.
Trump signed the bill behind closed doors, without the fanfare that has customarily accompanied his signing of executive orders. He criticized the measure as infringing on his powers to shape foreign policy, and said he could make "far better deals" with governments than Congress can.
Russian Prime Minister Dmitry Medvedev called the sanctions tantamount to a “full-scale trade war,” adding in a Facebook post that they showed the Trump administration had demonstrated "utter powerlessness.” “The hope that our relations with the new American administration would improve is finished,” he wrote.
Trump's litany of concerns about the sanctions, which also affect Iran and North Korea, raised the question of how vigorously Trump will implement them regarding Russia.
"While I favor tough measures to punish and deter aggressive and destabilizing behavior by Iran, North Korea, and Russia, this legislation is significantly flawed," Trump said in a message to lawmakers known as a signing statement. He also issued a statement for the press about the bill.
The new law allows Congress, which passed the measure to punish Russia over interference in the 2016 US presidential election and the annexation of Ukraine's Crimea, to halt any effort by Trump to ease sanctions on Russia.
His hands were tied after the Republican-controlled Congress approved the legislation by such a large margin last week that any presidential veto of the bill would have been overridden.
The legislation provoked countermeasures by Russian President Vladimir Putin, who said on Sunday that the US diplomatic mission in Russia must reduce its staff by 755 people. Russia is also seizing two properties near Moscow used by American diplomats.
Republican House of Representatives Speaker Paul Ryan welcomed the signing, saying it would send "a powerful message to our adversaries that they will be held accountable."
In his statements on the sanctions law, Trump complained about what he said was congressional infringement on the president's constitutional power to set foreign policy, saying the law reflected congressional "preferences" rather than a legal mandate.
Vice President Mike Pence, touring Baltic countries adjacent to Russia, has followed a hawkish line. Pence said Trump's signing of the legislation would show that Congress and the president were "speaking with a unified voice" on Russia.
However, Secretary of State Rex Tillerson, like Trump, has been critical of the legislation.
"The action by the Congress to put these sanctions in place and the way they did, neither the president nor I were very happy about that," Tillerson said on Tuesday.
The sanctions will affect a range of Russian industries and might further hurt Russia's economy, already weakened by 2014 sanctions imposed after the annexation of Crimea.
Besides angering Moscow, the legislation has upset the European Union, which has said the new sanctions might affect its energy security and prompt it to retaliate if needed. Several provisions of the law target the Russian energy sector, with new limits on US investment in Russian companies.
American companies also would be barred from participating in energy exploration projects where Russian firms have a stake of 33 percent or higher. The legislation includes sanctions on foreign companies investing in or helping Russian energy exploration, although the president could waive those sanctions.
It would give the Trump administration the option of imposing sanctions on companies helping develop Russian export pipelines, such as the Nord Stream 2 pipeline carrying natural gas to Europe, in which German companies are involved.
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