Qatar, a key mediator in the Hamas-Israel war, on Thursday condemned fresh Israeli air strikes on the Gaza Strip, saying they threatened to upend a fragile weeks-long truce.

Qatar condemned "brutal attacks by the Israeli occupation in the Gaza Strip... and considers them a dangerous escalation that threatens to undermine the ceasefire agreement," its foreign ministry said in a statement.

Gaza's civil defense agency said Israel launched fresh air strikes on the Palestinian territory early Thursday that killed three people.

The agency said there were "three martyrs and 15 wounded" after Israeli forces "bombed a residential building in the Bani Suheila area, east of Khan Younis", at around 4:00 am (0200 GMT), as Hamas and Israel accused each other of violating the fragile ceasefire that came into effect on October 10.

EU foreign policy chief Kaja Kallas said Thursday Kyiv and Europe needed to be involved in any Ukraine peace plan, as the U.S. pushes a new proposal that appears to repeat Russia's demands.

"For any plan to work, it needs Ukrainians and Europeans on board," Kallas told reporters in Brussels.

A pair of Israeli strikes in Gaza's southern city of Khan Younis early Thursday killed five people, according to hospital officials, bringing the death toll from airstrikes in the Palestinian territory over a roughly 12-hour period to 33. The strikes have been some of the deadliest since Oct. 10 when a U.S.-brokered ceasefire came into force.

The renewed escalation came after Israel said its soldiers had come under fire in Khan Younis on Wednesday. Israel said no soldiers were killed and responded with strikes.

The Israeli military has accused Hezbollah of violating the terms of a ceasefire by attempting to re-establish itself in southern Lebanon a short distance from Israel’s northern border.

"The Hezbollah terrorist organization has been working to rebuild its capabilities in the village of Beit Leef in southern Lebanon, in a blatant violation of the understandings between Israel and Lebanon," Israel’s military said Wednesday in a statement.

Residents of Lebanon's Ain al-Helweh Palestinian refugee camp described their fear and astonishment a day after a deadly strike that Israel said targeted a Hamas compound, a claim the Palestinian militant group rejected.

Tuesday night's raid, which Lebanese authorities said killed 13 people, was the worst since a ceasefire took effect last year between Israel and Hezbollah.

The Israeli army launched strikes on four south Lebanon towns on Wednesday, claiming it was targeting "Hezbollah infrastructure" after warning civilians of the impending raids.

The strikes came a day after 13 people were killed in an Israeli strike on a Palestinian refugee camp in south Lebanon -- the worst raid since a ceasefire took effect last year between Israel and Hezbollah.

France's environment minister said Wednesday that governments remain far from reaching a deal at U.N. climate talks in Brazil, but she was nonetheless "more optimistic" than the day before.

UEFA has given Barcelona the go-ahead to play Champions League matches at their partially rebuilt Camp Nou stadium, the La Liga giants said on Wednesday.

An EU court on Wednesday rejected an Amazon challenge against the bloc's digital content law, confirming that the tech giant must comply with its strict rules.