The Palestinian leadership will no longer work with the U.N. peace envoy, a senior official said Thursday, accusing him of overstepping his role by seeking a deal between Israel and the Islamist movement Hamas.

Britain's foreign secretary said Thursday he was "very worried" about the fate of a British student who, according to his wife, has been detained in the United Arab Emirates without charge since May.

A Palestinian stabbed and wounded an Israeli reserve soldier in the occupied West Bank on Thursday and troops were searching for the assailant, the Israeli army said.

Israel's military said it destroyed a Hamas-built tunnel extending into its territory from the Gaza Strip on Thursday that was intended for attacks.

U.S. President Donald Trump on Thursday said U.S. investigators were working with both Ankara and Riyadh to probe the suspicious disappearance in Turkey of Saudi journalist Jamal Khashoggi.

"We can't let it happen. And we're being very tough and we have investigators over there and we're working with Turkey and frankly we're working with Saudi Arabia," Trump said in an interview with "Fox and Friends."

A US student banned from entering Israel for allegedly having supported a pro-Palestinian boycott of the country appeared in court on Thursday to challenge the decision.

It is the latest in a series of cases drawing criticism of an Israeli law barring boycott supporters that opponents say violates freedom of expression.

President Donald Trump says the U.S. is looking into the fate of a Saudi writer missing and feared murdered but expressed reservations over calls to withhold further U.S. arms sales to Saudi Arabia, warning that such a move "would be hurting us."

Decades of close U.S.-Saudi relations, which have only intensified under Trump, appeared in jeopardy by the suggestion of a "carefully plotted murder" of a government critic, Jamal Khashoggi, 59, who disappeared a week ago after entering a Saudi consulate in Turkey. The wealthy former government insider had been living in the U.S. in self-imposed exile.

Israeli Prime Minister Benjamin Netanyahu's top ministers are squabbling, a deadline looms for contentious legislation that may bring down his government and a corruption indictment could be just around the corner.

Against this backdrop, there are growing signs he may soon call for elections — possibly as early as next week, when parliament reconvenes from its summer break. And though Netanyahu hasn't committed yet, conditions appear ripe for him to schedule the vote, nearly a year ahead of schedule.

Turkish President Recep Tayyip Erdogan urged Saudi Arabia to release footage of journalist Jamal Khashoggi and President Donald Trump demanded answers over his fate, as the kingdom faced growing pressure Thursday to provide a convincing explanation for his disappearance.

The United States said Wednesday it will refuse any post-war reconstruction assistance to Syria if Iran is present, expanding the rationale for US involvement in the conflict.