"I have made it clear that the Republic of Italy is bound to honour the solemn commitment that it has made to the Supreme Court to ensure the return of the marines to India within the time period permitted by the Supreme Court, " he said.

BBC: Italy-Indian row: Marines return to India for trial

The World Conference on Human Rights reaffirms the solemn commitment of all States to fulfil their obligations to promote universal respect for, and observance and protection of, all human rights and fundamental freedoms for all in accordance with the Charter of the United Nations, other instruments relating to human rights, and international law.

UNESCO: Vienna Declaration and Programme of Action

Obviously we -- the President is -- look, we have no more solemn commitment than to respect the service and the memory of those that died in service to preserving our freedom as a country.

WHITEHOUSE: Press Briefing

Mr Obama, meanwhile, said America's commitment to the security of Israel was "a solemn obligation".

BBC: US and Israel talk tough on Iran during Obama visit