BRUSSELS, Jan. 11 (Xinhua) -- European top diplomats Thursday reasserted their commitments to Iran nuclear deal, sending an unflagging message to Washington, as the White House is set to decide whether to reimpose sanctions against Tehran.

Speaking to the press following a meeting with their Iranian counterpart Mohammad Javad Zarif in Brussels, EU foreign policy chief Federica Mogherini, and foreign ministers of France, Germany, Britain, expressed their common views to uphold the hardly-wrought deal.

On Oct. 13, U.S. President Donald Trump announced that he had decided to decertify Iran's compliance with the Iran nuclear deal reached in 2015.

His move did not pull the United States out of the deal but triggered a 60-day window for Congress to decide whether to reimpose nuclear-related sanctions on Iran, even it means violating the deal on the U.S. side. In the past two months, the U.S. Congress did not come up with any resolution to reimpose sanctions.

With no action from Congress, the ball was passed back to Trump, who should decide on Friday if he would like to waive energy sanctions on Iran.