New Delhi, May 17 -- The United States reportedly responded to Iran's proposed conditions for negotiations with "excessive demands."

Sources told Iran's Mehr News agency that the Islamic Republic has formally conditioned the start of any negotiations on the fulfilment of a set of confidence-building measures with the US.

However, the US "responded with excessive demands...seeking concessions it failed to obtain through military means." The US offered Iran "nothing tangible in return," sources were quoted as saying.

According Mehr News Agency, Iran set the following as prerequisites for entering negotiations:

1. The end of the war on all fronts - with particular emphasis on Lebanon

2. Lifting of sanctions

3. Release of Iran's frozen ...