Taliban insurgents told re-elected President Barack Obama Wednesday to admit that the United States has lost the war in Afghanistan and pull its troops out now.

"Obama must by now know that they have lost the war in Afghanistan," spokesman Zabiullah Mujahid said in a statement posted on the Islamists' website.

A strong blast rocked Somalia's parliament Wednesday, with at least one person killed, an Agence France Presse reporter at the scene said.

The blast, believed to be a car bomb set off close to the parliament, is the latest in a string of attacks in the war-ravaged Somali capital.

A six-storey shopping mall collapsed on Wednesday in the Ghanaian capital Accra and dozens of victims were feared trapped in the rubble, witnesses and an Agence France Presse correspondent said.

One employee at the scene who declined to be named estimated around 40 workers in the building when it collapsed, though he was not sure about the number of customers.

Newly re-elected U.S. President Barack Obama is to visit Yangon later this month, a Myanmar government official said Wednesday, in the latest sign of Washington's support for reforms in the former pariah state.

"Obama will come to Yangon on November 19. He will meet with the President and Daw Aung San Suu Kyi here," the official told Agence France Presse on condition of anonymity, adding further details were unavailable because of security concerns.

Russian President Vladimir Putin on Wednesday congratulated Barack Obama with his victory in a tightly-fought U.S. presidential election vote that was greeted with relief in Moscow.

The Kremlin said Putin had reacted "positively" to Obama's victory over Mitt Romney after a campaign that saw the Republican Party challenger refer to Moscow as Washington's chief geopolitical foe.

Nearly 90 people are missing after an overloaded boat carrying Rohingya refugees towards Malaysia sank off Bangladesh early on Wednesday, the second such tragedy in less than a fortnight, officials said.

Bangladesh Border Guard commander Lieutenant Colonel Zahid Hasan said the wooden vessel was carrying around 110 passengers when it went down around 15 kilometers (nine miles) off the southern Cox's Bazaar coastal district.

A suicide bomber blew himself up in Pakistan's northwestern city of Peshawar on Wednesday, killing at least six people including a senior police officer, officials said.

The blast ripped through a congested part of the city, which lies close to Pakistan's lawless tribal areas and is frequently hit by bombings, leaving blood and body parts in the street.

EU leaders on Wednesday congratulated Barack Obama for his reelection to the White House, saying they look forward to boosting ties with the United States and cooperating on global challenges.

European Union President Herman Van Rompuy, who was first to react, wrote on his Twitter account: "Very happy about the reelection of President Obama."

World leaders including Iran's Mahmoud Ahmadinejad gather in Bali from Thursday for a forum to promote democracy, but critics say sanctions-hit Tehran will use the talks to combat its growing isolation.

The fifth Bali Democracy Forum has attracted record numbers of heads of state and government, including Australian Prime Minister Julia Gillard, Afghan President Hamid Karzai and South Korean President Lee Myung-Bak.

Republican challenger Mitt Romney conceded defeat in the U.S. election early Wednesday, telling supporters that he had called President Barack Obama to congratulate him on his victory.

"His supporters and his campaign also deserve congratulations," he said, in a brief address at his election watch party in Boston.