BRUSSELS (AP) — The 30 NATO allies signed off on the accession protocols for Sweden and Finland on Tuesday, sending the membership bids of the two nations to the alliance capitals for legislative approvals — and possible political trouble in Turkey.

The move further increases Russia's strategic isolation in the wake of its invasion of neighboring Ukraine in February and military struggles there since.

"This is truly a historic moment for Finland, for Sweden and for NATO," said alliance Secretary General Jens Stoltenberg.

The 30 ambassadors and permanent representatives formally approved the de...