A former elementary school principal in Iowa was sentenced to 30 years in prison Monday after pleading guilty to one count of producing child pornography involving students at his school, officials said.

Robert Burke, 43, admitted that as head of the school in Dubuque, Iowa, he had "used hidden cameras in the school bathroom to secretly capture videos depicting the genitals of male students," said the U.S. Justice Department

Envoys of U.S. President Barack Obama voiced "deep concern" at violence and the humanitarian crisis on the border of Sudan and South Sudan during a visit to the region, the White House said Monday.

Deputy National Security Advisor Denis McDonough joined Washington's special envoy for Sudan, Princeton Lyman, for talks in Khartoum and then in Juba, the capital of newly independent South Sudan, on Sunday and Monday.

Iran on Tuesday blasted new sanctions against the Islamic republic announced by the United States, Britain and Canada as "reprehensible and ineffective."

Foreign ministry spokesman Ramin Mehmanparast made the comments a day after Washington, London and Ottawa said they were leveling additional sanctions on Iran's financial sector because of a report by the U.N. atomic energy watchdog strongly suggesting Tehran was researching nuclear weapons.

The U.N. General Assembly on Monday passed an annual resolution condemning alleged human rights abuses in Iran with a record number of votes in support.

The assembly also passed resolutions condemning human rights in North Korea and Myanmar. All received record high backing.

Finance minister George Osborne said Monday Britain was cutting links with Iranian banks because of "evidence" that they are involved in the development of a nuclear weapons program.

"The UK government has just announced new financial sanctions against Iran. We are ceasing all contact between the UK financial system and the Iranian banking system," Osborne said.

Fourteen Pakistani soldiers were killed Monday in an ambush blamed on separatist rebels in the country's southwestern Baluchistan province, the Frontier Corps paramilitary force said.

The attack took place in the Musa Khel district, 400 kilometers southeast of the provincial capital Quetta, a military spokesman said.

The United States is to unveil new sanctions against Iran Monday targeting its financial, oil and petro-chemical sectors, according to briefings by U.S. officials to several American news outlets.

The reported sanctions aim to up the pressure on Tehran over its nuclear program after a report by the U.N. atomic energy watchdog strongly suggesting Iran was researching nuclear weapons.

Thousands of demonstrators marched Monday in south China to protest against a local land grab, carrying banners and shouting slogans opposing "dictatorship" and "corruption", locals said.

The peaceful march in Lufeng city in Guangdong province -- China's industrial heartland -- comes two months after protestors there rioted over the same problem, attacking a police station and ransacking vehicles.

A fire tore through a makeshift tent at a gathering of thousands of eunuchs in the Indian capital, killing 15 people and injuring at least 36 others, police said.

Emergency workers said Sunday's blaze was most likely caused by an electrical short and quickly spread through the tent, which was about 100 feet (30 meters) long.

Spain's right stormed to its biggest election win ever Sunday, unleashing dancing in the street by voters desperate for an end to soaring unemployment and a eurozone debt storm.

Mariano Rajoy, the bearded 56-year-old leader of the conservative Popular Party, gave a modest jump for joy as he proclaimed victory.