President Obama raised “profound” concerns Wednesday about ongoing Israeli settlements in the West Bank in his likely final meeting as president with Israeli Prime Minister Benjamin Netanyahu.

The two leaders discussed a recent spike in Mideast violence and Obama’s frustration with “the settlement activity as it enters the 50th year of occupation,” said administration officials briefed on the meeting on the sidelines of the UN world leaders’ gathering.

Obama raised “profound US concerns about the corrosive effect that is having on the prospects of two states,” said one official, according to pool reports.

Netanyahu pushed back on Obama’s assessment, observers said.