In recent weeks, Russia has advanced more than 100,000 soldiers to its border with Ukraine. A Kremlin spokesperson says Russia poses no threat to anyone, but its 2014 invasion of Crimea and its ongoing material support for separatist rebels in Ukraine’s Donbas region (along with related denials of the same) have European and U.S. officials on alert. E.U. chief Ursula von der Leyen insists the E.U. and U.S. “fully support the territorial integrity of Ukraine,” and together they’re publicly discussing retaliatory steps, mainly sanctions, if Russia crosses the border.