Israel's vice prime minister is playing down the Muslim Brotherhood's decision to seek the presidency in neighboring Egypt.

Vice Premier Moshe Yaalon says maintaining peace with Israel is in any Egyptian leader's interest, and that Cairo's relationship with Washington is linked to the peace deal.

He told Israel Radio on Sunday that "as long as ... the Muslim Brotherhood president understands Egypt's commitments and its interests, that will preserve the peace deal."

Israel's 1979 peace agreement with Egypt is a pillar of security for both countries, but Israelis have become increasingly concerned over its future under Egypt's Islamist-dominated parliament.

As parliament's largest party, the Brotherhood's candidate is the front-runner in Egypt's May presidential elections.