The Iranian intelligence ministry said on Saturday that it had made 30 arrests as it dismantled a network suspected of spying for the United States on its basic infrastructure as well as its nuclear and defense research.

"Due to the massive intelligence and counter-intelligence work by Iranian intelligence agents, a complex espionage and sabotage network linked to America's spy organization was uncovered and dismantled," a ministry statement read out on state television said.

Six medical students were killed and 23 others wounded in a Taliban suicide attack at Afghanistan's main military hospital in Kabul on Saturday, the defense ministry said.

The blast took place in a tent used as a dining room by students at the city center hospital, one of the biggest and best-equipped in Afghanistan.

Turkey has condemned an attack by far-right nationalists on a mosque in Bulgaria, warning against rising Islamophobia in Europe.

"We expect the perpetrators and inciters of this abhorrent attack on freedom of worship... to be quickly apprehended and punished," a foreign ministry statement said late Friday.

Israeli leader Benjamin Netanyahu lectured President Barack Obama in his own office Friday, warning him not to chase "illusions" of Middle East peace and opening a deep rift in U.S.-Israel ties.

In a dramatic Oval Office appearance, after 90 minutes of talks, Prime Minister Netanyahu emphatically vowed Israel would never return to its 1967 borders and laid down a set of non-negotiable conditions for peace talks.

At least 15 people were killed in an oil tanker blaze after a bomb exploded on the Afghanistan-bound NATO vehicle near a Pakistani border town on Saturday, officials said.

The victims were young people who had gathered to collect oil leaking from the tanker near Landi Kotal town in the northwestern tribal region of Khyber, local administration official Shafeerullah Wazir said.

Saudi Arabian tycoon Prince Alwaleed bin Talal urged the United States Friday to step up efforts to reduce its massive budget deficit, calling it a time bomb.

"We in the outside world, outside the United States, believe the United States is not giving much care and attention to this time bomb that you have right now here," Alwaleed said in an interview with U.S. television network CNBC.

U.S. President Barack Obama will hold one-on-one talks with Russian President Dmitry Medvedev, Japan's Prime Minister Naoto Kan and French leader Nicolas Sarkozy at next week's G8 summit in France.

Obama, who will also visit Ireland, Britain and Poland next week on a major European tour, which will include the G8 developed nations summit in the French seaside resort of Deauville.

The corruption trial of France's former president Jacques Chirac can go ahead, a top appeals court ruled Friday, rejecting a constitutional challenge.

Lawyers for one of the co-defendants of Chirac, who is accused of embezzling public funds as mayor of Paris in the 1990s, had argued that some of the charges were unconstitutional under the statute of limitations.

The 31-year-old king of Bhutan, an Oxford-educated bachelor crowned in the remote Himalayan country in 2008, set up another royal wedding on Friday by announcing his engagement.

Jigme Khesar Namgyel Wangchuck, who helped usher in democracy in the Buddhist nation, revealed his intention to marry 20-year-old student Jetsun Pema during an address to parliament.

The Taliban bombed a U.S. consulate convoy in Peshawar on Friday, killing one person and wounding 11 others in the first attack on Americans in Pakistan since Osama bin Laden's death.

A U.S. embassy spokesman said no U.S. personnel were seriously wounded in the rush-hour attack in the volatile northwestern city, which runs into the tribal belt that Washington has branded a global headquarters of al-Qaida.