Myanmar's junta lost a tug of war over leadership of its U.N. mission in New York and the United States unveiled new sanctions targeting military conglomerates after the deaths of dozens of civilians protesting against last month's coup.

With tussles going on over diplomatic loyalties overseas, pro-democracy activists said they planned to hold more demonstrations in Myanmar on Friday to oppose the Feb. 1 ouster of the elected government of Aung San Suu Kyi.

"Our federation will…