JERUSALEM — Vowing eternal support for America’s top Mideast ally, U.S. President Barack Obama today assured Israel of his personal commitment to its security and delivered a blunt warning to its foes that the United States has the Jewish state’s back.

Arriving in Israel on his first trip to the country as president, Obama told the Israeli people at an extravagant welcoming ceremony that “peace must come to the Holy Land” and that goal would not be achieved at Israel’s expense. U.S. backing for Israel will be a constant as the Middle East roils with revolution and Iran continues work on its nuclear program, he said.

“The United States is proud to stand with you as your strongest ally and your greatest friend,” Obama said, accepting profuse thanks from Israeli President Shimon Peres and Prime Minister Benjamin Netanyahu on the tarmac at Tel Aviv’s Ben Gurion International Airport.

“Across this region the winds of change bring both promise and peril,” he said, calling his visit “an opportunity to reaffirm the unbreakable bonds between our nations, to restate America’s unwavering commitment to Israel’s security, and to speak directly to the people of Israel and to your neighbors.”