The Israeli military is ramping up offensives on the Gaza Strip and is attacking Hezbollah militants in southern Lebanon despite US Secretary of State Antony Blinken's visit to Israel to seek diplomatic solutions to the conflicts.

Israeli forces announced on Wednesday that they carried out air strikes on about 150 targets in Gaza and killed a number of Hamas fighters in the southern city of Khan Younis and elsewhere.

Palestinian media reported on Wednesday that at least 15 people were killed in an Israeli attack outside Rafah in the south.

Health authorities in Gaza say the death toll in the enclave has reached 23,210.

Israeli forces have also been intensifying attacks on the Shia Muslim group Hezbollah, which is based in southern Lebanon.

Their air strike killed a Hezbollah commander on Monday, and another commander who directed drone attacks on Israel was killed on Tuesday.

Secretary Blinken referred to Israel's stepped-up offensives in southern Lebanon and Gaza when he spoke to reporters on Tuesday in Tel Aviv.

He expressed hope that Israel would take a diplomatic path to easing tensions in the region.

But the outlook remains unclear as the Israeli side has not ruled out military solutions.