**Iran Nuclear Talks Begin in Kazakhstan **
World powers and Iran have begun two days of talks on Tehran's nuclear program.
The discussions opened Friday in Almaty, Kazakhstan among the five permanent members of the U.N. Security Council, plus Germany and Iran.
A spokesman for European Union foreign policy chief Catherine Ashton told reporters Friday that the group hopes Iran will present a response to proposals made to Iran in February. Those proposals include Iran closing a nuclear facility and getting rid of its stockpile of enriched uranium in exchange for permission to trade some products now under international sanctions.
On Thursday, Iran's chief nuclear negotiator, Saeed Jalili, demanded that world powers recognize an Iranian right to enrich uranium.
The United States and its allies accuse Iran of amassing highly-enriched uranium as part of a covert drive to make nuclear bombs. Tehran insists its nuclear program is peaceful.
A senior U.S. official said Wednesday the world powers want Iran to give a "concrete and substantive" response to their proposal.
The U.S. official reiterated that President Barack Obama prefers diplomacy, but is leaving "all options" on the table to deal with the situation.
**Building Collapse Kills 29 in India **
Indian police say a multi-story building has collapsed in Mumbai, killing at least 29 people and injuring scores of others.
Rescue workers continue to search for more people that may be trapped in the debris.
The collapse occurred Thursday evening at a seven-story building, still under construction, in the Mumbai suburb of Thane.
Most of the dead were construction workers and their families staying in the unfinished parts of the building. At least nine children are among the dead.
The Thane police commissioner says the building was weak and built illegally. Police have registered a case of culpable homicide against the builder.