At least 37 Palestinians have been killed by Israeli troops near the Gaza border, according to Palestinian officials.
The violent clashes come ahead of the opening of the US embassy in Jerusalem today.
Tanaiste Simon Coveney says the move is “inflaming a very tense situation”.
It’s angered Palestinians who don’t recognise the city as Israel’s capital.
Sky’s Dominic Waghorn is in Jerusalem:
For years countries have based their ambassadors to Israel in Tel Aviv – because Jerusalem is highly disputed.
But Donald Trump’s gone against that.
At the opening ceremony – the US ambassador to Israel David Friedman praised the President: