By Nidal al-Mughrabi and Alexander Cornwell

CAIRO/JERUSALEM (Reuters) -Israeli forces killed three Palestinians in Gaza near the line demarcating areas of Israeli control on Monday, underlining the struggle to broaden a fragile ceasefire deal approved over six weeks ago to global acclaim.

Palestinian medics said Monday's incidents involved an Israeli drone firing a missile at a group of people east of Khan Younis, killing two and wounding another, and a tank shell killing a person on the eastern side of Gaza City.

Israel's military said it had fired after identifying what it called "terrorists" crossing the so-called yellow line and approaching its troops, posing an immediate threat to them.

Palestinian militant group Hamas and Israel signed a truce on October 9 halting two years of devastating warfare but the agreement left the most intractable disputes for further talks,........

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