Pakistan, April 17 -- The United States has agreed in principle to release $20 billion in frozen Iranian assets as part of ongoing negotiations with Tehran, according to US media reports. The development signals fresh progress in diplomatic talks between the two countries. The move is significant as it ties financial relief to nuclear concessions.

Reports suggest that Washington's offer is linked to Iran stepping back from its stockpile of enriched uranium. United States and Iran are said to be discussing a framework involving nuclear restrictions and sanctions relief. Moreover, both sides are attempting to narrow key differences in the agreement.

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