Leaders of the West's top economies are set to hold their summer summit in Brussels, not Sochi.
That's a slap in the face to Russian President Vladimir Putin.
The U.S. and allies are angry at Russia for annexing the Crimean region of Ukraine.
President Obama helped convince other G-7 members to move the summit.
The U.S. is leading international efforts to punish Russia over its actions in Ukraine.
Obama is meeting with other world leaders this week in Europe.