From kicking out North Korean workers and ending visa-free travel for its citizens, to stripping flags of convenience from its ships, Cold War-era allies from Poland to Mongolia are taking measures to squeeze the isolated country.
More such moves, with prodding from South Korea and the United States, are expected after North Korea recently defied U.N. resolutions to conduct its fifth nuclear test.
North Korea's limited global links leave most countries with few targets for penalizing the regime on their own.