U.S. President Barack Obama told Cambodia's premier in a "tense" meeting Monday that his government's human rights violations were "an impediment" to better bilateral ties, a U.S. official said.

Newly re-elected Obama, fresh from a historic jaunt to Myanmar, met Cambodian Prime Minister Hun Sen for talks in Phnom Penh ahead of joining an East Asia Summit.

Hamas chief Khaled Meshaal said Monday his movement is committed to efforts to secure a truce with Israel, but insisted the Jewish state must lift its six-year blockade of the Gaza Strip.

"We are committed to a ceasefire, but Israel must stop its aggression," Meshaal said. “We don't want an escalation, because Hamas and all resistance factions are courageous but they are also rational," he added.

Turkish Prime Minister Recep Tayyip Erdogan accused the United Nations on Monday of failing to act over the deadly Israeli air bombardments of Gaza, calling Israeli a "terrorist state" that "massacres innocent children".

He accused the U.N. Security Council of "turning a blind eye" to the suffering of Muslims across the world and called for "sincere action" to end Israel's strikes on Gaza, where 90 Palestinians died since violence erupted on Wednesday, while three Israelis have been killed in militant rocket fire.

Smartphones and tablets powered by Google's Android software are devouring the mobile gadget market, eating into Apple's turf by feeding appetites for innovation and low prices, analysts say.

The Android operating system powered nearly three out of four smartphones shipped worldwide in the recently ended quarter as the mobile platform dominated the market, according to industry trackers at IDC.

Pinball and slot machine wizard Joe Kaminkow is working his magic on the social games scene pioneered by Zynga and taking Facebook users along the yellow-brick road as his opening move.

Kaminkow and his small team at startup Spooky Cool Labs got a blessing from Warner Brothers Interactive Entertainment to make "Wizard of Oz" game for play at the leading social network complete with clips from the classic film.

People living in the tropics are likely to die more than seven years younger than those in other regions, according to the first findings of a global research project released Monday.

The "State of the Tropics" study, run by 13 institutions across 12 countries, reported that people living in the world's tropical zones in 2010 had an average life expectancy of 64.4 years.

French health care giant Sanofi Pasteur will soon test a vaccine against dengue fever in India amid concerns about the increasingly global spread of the disease, reports said Monday.

The vaccine will be tried on about 120 adults followed by trials on children before it can be made available internationally as soon as 2015, the Times of India newspaper said.

German Foreign Minister Guido Westerwelle will travel to the Middle East on Monday for talks aimed at encouraging a ceasefire between Israel and Gaza militants, his spokesman said.

Westerwelle will meet his Israeli counterpart Avigdor Lieberman in Jerusalem late Monday before seeing Prime Minister Benjamin Netanyahu, President Shimon Peres and Defense Minister Ehud Barak on Tuesday.

Italian Prime Minister Mario Monti and his Qatari counterpart urged an immediate ceasefire in Gaza on Monday, as Israel and militants in the Palestinian enclave traded fire for a sixth straight day.

"We are very worried about the escalating violence," Monti said at a joint news conference in Doha with Qatari Prime Minister Sheikh Hamad bin Jassem al-Thani.

Europe faces key decisions this week about its role in space, pondering plans for a new rocket and its involvement in the International Space Station at a time of money crunch.

Meeting in Naples on Tuesday and Wednesday, science ministers from the European Space Agency's 20 member states will be asked to set a multi-year program with billions of euros at stake for the highly successful space industry.