sticking point

The prison and its practice of detaining people who have not been charged with crimes has been a regular sticking point in the years since.

The IFS said finances were a significant sticking point, with rising rents and house prices fuelling the trend.

Nato membership in particular remains a sticking point, as it has been since well before Russia's full-scale invasion.

And for years US support for Taiwan had been the sticking point in negotiations.

One of the main sticking points is the continued Israeli military presence in the Philadelphi corridor, a strategically important strip of land in southern Gaza along the border with Egypt.