The head of Ukraine’s parliament sent a letter to several U.S. senators outlining specific demands for sanctions. Lawmakers are scrambling to put together a bipartisan sanctions package to deter Russia from invading Ukraine. Ruslan Stefanchuk asked for “expedited and higher-impact security assistance, including air defenses, anti-ship and anti-armor capabilities, and flexible loans and financing mechanisms, according to the letter. He also called for mandatory pre-trigger and post-trigger sanctions against all of Russia’s “most significant financial institutions” The Biden administration has warned that an invasion of Ukraine could happen any day. The senators are using legislation introduced by Sen. Bob Menendez (D-N.J.) as a starting point. . . .