All personnel at the U.S. Embassy in the Venezuelan capital of Caracas will be withdrawn this week, according to Secretary of State Mike Pompeo.

“The U.S. will withdraw all remaining personnel from @usembassyve this week,” Pompeo tweeted late Monday night. “This decision reflects the deteriorating situation in #Venezuela as well as the conclusion that the presence of U.S. diplomatic staff at the embassy has become a constraint on U.S. policy.”

Amid an economic and humanitarian crisis in the South American country, the U.S. and other allies have demanded the ouster of Venezuelan strongman Nicolas Maduro's ouster and recognized opposition leader Juan Guaido as interim president.

White House national security adviser John Bolton said Sunday that momentum is building against Maduro, and members of the Venezuelan military and National Assembly are talking about ways to transition to a government headed by Guaido.

“There are countless conversations going on between members of the National Assembly and members of the military in Venezuela talking about what might come, how they might move to support the opposition,” Bolton told ABC News' Martha Raddatz.

Venezuela is currently experiencing a massive power outage, which Pompeo attributed earlier Monday to “the Communists in Havana.” Maduro pins the power outage on “multiple cyber-attacks,” which U.S. officials denied and cited years of mismanagement by the regime. The blackout is exacerbating food shortages in the country and leading to the deaths of babies and other vulnerable patients in hospitals without electricity.

[Related: Pompeo blames 'imperialist' Cuba for Venezuelan blackout]