The United States will announce the first of what could be multiple levels of new sanctions and export controls against Russia on Tuesday in response to Moscow’s decision to recognize two breakaway regions of Ukraine as independent and send troops there. President Vladimir Putin on Monday told Russia’s defense ministry to deploy forces into the two regions to “keep the peace,” defying Western warnings that such a step would be illegal and wreck peace negotiations. The United States has promised severe sanctions against Russia in the event it invades Ukraine, which the White House has previousl…