Israel agreed on Sunday to double its population on the occupied Golan Heights while saying threats from Syria remained despite the moderate tone of rebel leaders who ousted President Bashar al-Assad a week ago.

"Strengthening the Golan is strengthening the State of Israel, and it is especially important at this time. We will continue to hold onto it, cause it to blossom, and settle in it," Prime Minister Benjamin Netanyahu said in a statement.

Israel captured most of the strategic plateau from Syria in the 1967 Six-Day War, annexing it in 1981.

In 2019 then-President Donald Trump declared U.S. support for Israeli sovereignty over the Golan, but the annexation has not been recognised by most countries. Syria demands Israel withdraw but Israel refuses, citing security concerns. Various peace efforts have failed.

Netanyahu said he spoke with Trump on Saturday about security developments in Syria.