The co-founders of Instagram are resigning their positions with the social media company without explanation.

Chief Executive Kevin Systrom said in a statement late Monday that he and Mike Krieger, Instagram's chief technical officer, plan to leave the company in the next few weeks and take time off "to explore our curiosity and creativity again."

On the same day Arab separatists killed at least 25 people in an attack targeting a military parade in southwestern Iran, President Donald Trump's lawyer mounted a stage in New York to declare that the government would be toppled.

"I don't know when we're going to overthrow them. It could be in a few days, months or a couple of years, but it's going to happen," former New York Mayor Rudy Giuliani said Saturday. "They are going to be overthrown. The people of Iran obviously have had enough."

Nelson Mandela's South African journey from anti-apartheid leader to prisoner to president to global statesman — the "Long Walk to Freedom" of his autobiography title — is one of the 20th century's great stories of struggle, sacrifice and reconciliation. Now the United Nations is seeking to harness its soaring symbolism.

The unveiling of a statue of Mandela, born 100 years ago, with arms outstretched at the U.N. building in New York on Monday opens a peace summit at the General Assembly, where world leaders will once again address the planet's pressing problems: war, poverty, disease, migration and climate change. They'll do so amid a massive security operation in a city where Mandela was welcomed by exultant crowds in 1990, a few months after he walked out of a South African jail, ending 27 years of imprisonment under the country's white minority government.

German police have arrested a 20-year-old woman on suspicion of serving in the Islamic State group.

Federal prosecutors said Friday the German-Algerian woman, identified as Sarah O. for privacy reasons, is accused of membership in a foreign terrorist organization.

Turkey says joint patrols with U.S. forces will start soon in the strategic northern Syrian town of Manbij.

The patrols are part of a "road map" that Ankara and Washington agreed on in June to defuse tensions amid Turkish demands for the withdrawal of a U.S.-backed Kurdish militia that freed the town from the Islamic State group in 2016.

President Michel Aoun received on Friday at Baabda Palace, visiting FBI Director Christopher Wray who expressed support to the Lebanese army.

A statement released by the presidential palace said Aoun received Wray and told him that Lebanon has succeeded in fighting terror groups thanks to U.S. support and that of friendly countries.

A woman working a temporary job at a drugstore warehouse in Maryland got into an argument at work Thursday morning and began shooting colleagues, killing three before fatally turning the gun on herself, authorities and witnesses said.

Workers at the Rite Aid distribution center in northeastern Maryland described terrifying moments of "crazy" gunfire and people screaming and running in all directions after the shooting. Others said they helped the wounded, one person tying blood-soaked jeans around a man's injured leg in a bid to stop the bleeding.

Shiites across the Middle East on Thursday marked Ashoura, an annual commemoration mourning the 7th century death of Prophet Muhammad's grandson Hussein, one of Shiite Islam's most beloved saints.

For Shiites, who represent over 10 percent of the world's 1.8 billion Muslims, the remembrance of Hussein is an emotional event that sees many believers weep over his death at the Battle of Karbala in present-day Iraq. Some beat their backs with chains, flagellating themselves in a symbolic expression of regret for not being able to help Hussein before his martyrdom.

Every part of Lebanon's national drink, arak, is infused with tradition — from distilling the aniseed-tinged liquor to the ritual of mixing it at the table, when the transparent liquid suddenly turns milky white as water is added.

Arak is a staple of big Sunday meals. With a sweet taste and high alcohol content, around 40 percent, it's best consumed with food — lots of it. That makes it perfect for Lebanon's traditional meze, spreads of never-ending small dishes that family and friends linger over for hours.

Iranian fighters and Iran-backed groups, like Lebanon's Hizbullah, have emerged emboldened from the war in Syria and with valuable battlefield experience that they are seeking to leverage elsewhere, the U.S. State Department said Wednesday.

The State Department's annual survey of global terrorism said Iran and its proxies are responsible for fomenting violence in Afghanistan, Bahrain, Iraq, Lebanon and Yemen.