European powers said Friday they were ready to drop a new sanctions push on Iran if it addresses concerns on its nuclear program over the next month, but Tehran denounced the offer as insincere.

Britain, France and Germany, known as the E3, triggered the so-called “snapback” mechanism the previous day to reinstate UN sanctions on Tehran for failing to comply with commitments made in a 2015 deal over its nuclear program.

In July, “we offered Iran an extension to snapback, should Iran take specific steps to address our most immediate concerns,” Barbara Woodward, the British ambassador to the United Nations, said alongside her German and French counterparts ahead of a closed-door Security Council meeting on the issue.

“As of today, Iran has shown no indication that it is serious about meet

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