Acknowledging “the real possibility of war,” Vice President Kamala Harris wrapped up a weekend of outreach to European allies with a push to bolster the West’s resolve in confronting Moscow with crippling sanctions as increasingly dire signs suggest Russia’s Vladimir Putin plans to order an invasion of Ukraine.

In a burst of diplomacy at the annual Munich Security Conference, Harris tried to make the case to American allies that rapidly escalating tensions on the Ukraine-Russian border meant European security was under “direct threat” and there should be unified support for economic penalties if the Kremlin invades its neighbor.