Nepal, June 27 -- Iran's supreme leader has insisted the US "gained no achievements" from strikes on its nuclear facilities, in his first public address since a ceasefire with Israel was agreed on Tuesday, BBC reported.

Ayatollah Ali Khamenei said the strikes did not "accomplish anything significant" to disrupt Iran's nuclear program and described the retaliation against an American air base in Qatar as dealing a "heavy blow".

It came as Washington doubled down on its assessment that the strikes had severely undermined Iran's nuclear ambitions.

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