Vice President Joe Biden on Wednesday criticized Palestinians for a “failure to condemn” a stabbing spree that killed an American student and war veteran the day before, after Palestinian President Mahmoud Abbas’ political party posted a statement online praising the stabber.

The stabbing spree took place Tuesday near the seaside city of Jaffa, where Biden was meeting nearby with Israel’s former president. Biden said his wife and grandchildren were having dinner on the beach not far from the scene of the attack, which wounded a dozen Israelis, civilians and police officers.

Abbas’ Fatah party posted a cartoon on its Twitter account of a hand holding a knife over a map of Israel and the Palestinian territories, and calling the Palestinian stabber from Tuesday’s attack a “hero” and “martyr.”

“This is the result so long as Israel does not believe in the two-state solution and ending its occupation,” the Fatah statement on Twitter read, referring to a future Palestinian state alongside Israel.

In a joint press conference with Biden, Israeli Prime Minister Benjamin Netanyahu condemned Fatah’s glorification of the stabber.

Both leaders spoke highly of the American victim, Taylor Force, a 28-year-old MBA student at Vanderbilt University and a West Point graduate who served tours of duty in Iraq and Afghanistan.

Israel says it is fueled by a campaign of Palestinian incitement compounded on social media sites that glorify and encourage attacks.

“The United States of America condemns these acts and condemns the failure to condemn these acts,” Biden said. “The kind of violence we saw yesterday, the failure to condemn it, the rhetoric that incites that violence, the retribution that it generates, has to stop.”

The U.S. vice president spoke warmly of his decades-long relationship with Netanyahu, and reemphasized America’s commitment to Israel’s security.

Biden is in Israel for a two-day visit as part of a regional tour of the Mideast. He is meeting both Israeli and Palestinian leaders. There were speculations he would try to revive the moribund Israeli-Palestinian peace talks, but Biden said, “I didn’t come with a plan. I just came to speak with a friend,” referring to Netanyahu.

“Mr. Vice President should start from where the real crime is, which is the Israeli occupation and Israeli colonial settlement, because the beginning is here for those who want peace in the Middle East,” an Abbas aide, Nabil Shaath, told The Associated Press.

Shortly before the two leaders met in Jerusalem, two Palestinian terrorists carried out shootings in the city before police shot and killed them, Israeli police said. A Palestinian man was seriously wounded in the shootout.

The incident began when passengers on an Israeli bus spotted the two gunmen on the street and heard shots fired, said police spokeswoman Luba Samri. No injuries were reported. A motorist responded by shooting toward the suspects, who fled by car.

Police began searching for the terrorist’s vehicle. When a policeman approached a car that matched the description, the gunmen raised their weapons at the officer and he fired at them. Other police units on the scene shot at the suspects, killing them, Samri said. The shootout took place on a main road alongside Jerusalem’s light rail and close to the New Gate of the Old City.

A Palestinian civilian at the scene was shot in the head and is in serious but stable condition, an Israeli hospital said. Police are investigating whether he was shot by the gunmen or by police.

Police identified the two terrorists as Palestinians, both about 20 years old, from the Jerusalem area.

(AP)