Trump and Hegseth made that OK to do.

Trump escalated it, but it actually goes back to Clinton if not before. From Wikipedia:

According to Clinton administration official Richard Clarke:

'extraordinary renditions', were operations to apprehend terrorists abroad, usually without the knowledge of and almost always without public acknowledgment of the host government ... The first time I proposed a snatch, in 1993, the White House Counsel, Lloyd Cutler, demanded a meeting with the President to explain how it violated international law. Clinton had seemed to be siding with Cutler until Al Gore belatedly joined the meeting, having just flown overnight from South Africa. Clinton recapped the arguments on both sides for Gore: 'Lloyd says this. Dick says that.' Gore laughed and said, 'That's a no-brainer. Of course it's a violation of international law, that's why it's a covert action. The guy is a terrorist. Go grab his ass.'

It escalated under Bush and continued under Obama, and now we're at a point where they've straight up abducted a head of state.