Britain is facing a "staggering rise" in assassination attempts on U.K. soil by Russia and Iran, as the hostile states recruit criminals to "do their dirty work" for them, the head of the U.K.'s domestic intelligence agency said Tuesday.

MI5 director Ken McCallum said his agents and police have tackled 20 Tehran-backed plots since 2022 and warned that Iran could expand its targets in the U.K. if Israel attacks in response to Iran's missile barrage. The spy chief said the widening conflicts in the Middle East raise the risk "of an increase in – or broadening of – Iranian state aggression in the U.K."

Palestinians say heavy fighting is underway in northern Gaza, where Israel has ordered another wholesale evacuation and launched a ground operation a year into the war with Hamas.

At least 15 people, including two women and four children, were killed Tuesday in the fighting in Jabaliya, the nearby Kamal Adwan Hospital said.

Hezbollah deputy chief Sheikh Naim Qassem on Tuesday said the group's military capabilities remained "fine" despite weeks of heavy Israeli airstrikes.

"You see that our daily accomplishments are great. Hundreds of rockets and dozens of aircraft (drones), a great number of (Israeli) settlements and cities have come under rocket fire... I would like to reassure you that our capabilities are fine," Qassem said in a televised address.

The Israeli military said it killed a senior Hezbollah commander in a strike on south Beirut.

The military said Tuesday that it killed Suhail Husseini, who it said was responsible for overseeing logistics, budget and management of the militant group.

Israeli Prime Minister Benjamin Netanyahu said Monday that Israel was fighting a “war of resurrection” and would continue until achieving its goals, as Israelis marked the anniversary of the Hamas attack.

“This is the war of our existence — the ‘war of resurrection’. This is what I would like to officially call the war,” Netanyahu said during a Cabinet meeting.

The war in Gaza was always personal for many Palestinian refugees in Lebanon.

Israel's military struck outside the gates of a hospital in southern Lebanon without warning on Friday, killing seven paramedics and forcing the facility to close, the hospital director told The Associated Press a day after one of the most deadly attacks on health workers in the weeks since fighting escalated between Israel and Hezbollah.

The account of the Friday airstrikes that flung hospital doors off their hinges and shattered glass was the latest to detail attacks that Lebanon's health ministry says have killed dozens of health workers.

It was a year ago when Jomana Siddiqui visited Lebanon, where her father was born — and is now buried. She planned to return there soon; this time, she thought, she would take her two teenage daughters.

Instead, Siddiqui, who lives in California, now worries about relatives there. As she watches from afar the violence and the recent escalation in Israel's military campaign in Lebanon, Siddiqui thinks about the people she met during her visit, the kindness and generosity she encountered.

Israel launched a new air and ground offensive in northern Gaza Sunday, hours after pounding Beirut's southern suburbs in the heaviest bombardment since it stepped up its pursuit of Hezbollah last month.

The intensified campaign on two fronts, including an overnight strike on a Gaza mosque that killed 19, came as Israel remained on high alert ahead of memorial events to mark the surprise attack a year ago that triggered the ongoing war.

President Joe Biden said Monday, on the anniversary of the Hamas attacks, that the United States remains "fully committed" to Israel's security, and that Israel has the right to defend itself against Hamas, Iran and others.

"One year later, Vice President (Kamala) Harris and I remain fully committed to the safety of the Jewish people, the security of Israel, and its right to exist," Biden said in a statement marking the first anniversary of the October 7 attacks by Hamas.