Bulgarian police on Wednesday released a composite picture of the man they think blew himself up on a bus packed with Israelis, killing six people last month in the Black Sea resort of Burgas.

The computer-generated picture shows a young man with fair skin, light-colored eyes, a high forehead and short dark brown hair.

Taliban insurgents near the Afghan capital Kabul executed four civilians working for a Western security company, officials said Wednesday, days after a similar execution in the area.

The bullet-riddled bodies of the four men were found in the Jalrez district of Wardak province, some 40 kilometers from Kabul.

Two Turkish soldiers were killed Wednesday in a clash with Kurdish rebels in the country's southeast, according to local officials.

The troops were killed in an early-morning bomb attack on troops sent to Lice town in southeastern Diyarbakir province to push back members of the Kurdistan Workers' Party (PKK), Diyarbakir governor Mustafa Toprak said.

India restored its power supplies on Wednesday after two days of massive outages that blacked out half the country, but fears remained that the grid could again collapse under the strain of over-demand.

India's electricity network was back at full capacity after three regional grids failed on Tuesday in the country's worst power crisis that left more than 600 million people without supplies.

Two suicide bombers blew themselves up at the gates of Somalia's constituent assembly on Wednesday, killing themselves but with no other reported deaths, police said.

Beijing has dismissed concerns raised in a Japanese government report over China's military activity as "groundless" and "irresponsible", adding it had raised formal objections with Tokyo.

China's foreign ministry was responding to Japan's annual defense white paper, released Tuesday, which warned of a "lack of transparency" in Beijing's military strategy and described its response to disputes with neighbors as "assertive".

Beijing reacted furiously Wednesday to new U.S. sanctions imposed on a Chinese bank over transactions with Iran, urging Washington to revoke them and saying it would lodge an official protest.

China's foreign ministry urged the United States to lift the sanctions on the Bank of Kunlun and stop "damaging China's interests and Sino-U.S. relations".

U.S. President Barack Obama imposed new economic sanctions Tuesday targeting Iran's oil export sector and a pair of Chinese and Iraqi banks accused of doing business with Tehran.

In a statement released by the White House, Obama said the new measures underlined the United States' determination to force Tehran "to meet its international obligations" in nuclear negotiations.

U.S. Defense Secretary Leon Panetta arrived in Israel on Tuesday for talks to share information on Iran's nuclear program, but said there would be no discussion about "potential attack plans."

Shortly after Panetta's arrival, Prime Minister Benjamin Netanyahu told private Channel 2 television Israel had not yet made any decision about a possible attack against Iran but reaffirmed his country's right to defend itself.

Bulgarian Tourism Minister Delian Dobrev said on Tuesday forensic experts were close to producing an image of the suicide bomber who killed six people in an attack on Israelis at a Black Sea resort.

"The investigation into the attack is making progress and we have succeeded in recreating 95 percent of the face of the murderer," Israeli President Shimon Peres' office quoted Dobrev as telling his host during a meeting in Jerusalem.