The Senate has passed a sweeping sanctions bill on Russia and Iran named for the late Senator Lindsey Graham of South Carolina, who championed it, according to ABC News and NBC News.

The measure had stalled in Congress for months before this week's vote, according to CBS News. The final package targets Russia's energy sector, per Reuters, and adds new sanctions on Iran, per NBC News. The Washington Post and CBS News both call it an unusually tough response aimed at Moscow.

Democratic Senator Richard Blumenthal, the bill's co-sponsor, gave live updates as the vote unfolded, according to NBC News.

The bill now goes to the House, then to President Trump's desk.

HYPOTHESIS: passage after months in limbo suggests the White House's appetite for shielding Russia from new sanctions, in favor of leaving room for diplomacy, has narrowed. Supporting this: the bill's long delay before finally clearing the Senate. Against this: Senate passage alone does not guarantee Trump signs it quickly, or at all.

What to watch: how fast the House takes it up, and whether Trump signs, sits on, or lets the bill become law without his signature.