JCPOA violation by a member can't be reciprocated by violation, unilaterally

Aboutalebi made the remarks while reacting to the US Senate approval of a legislation which extends the Iran Sanctions Act (ISA) for another ten years, IRNA reported. 

Commenting on the latest anti-Iran move of the US lawmakers, Aboutalebi wrote on his twitter on Friday that any violation of the landmark nuclear deal would be 'regarded as an act against all engaged' parties.

He emphasized the fact that the most legitimate and severe move against violation of the Joint Comprehensive Plan of Action (JCPOA) 'is a coordinated and severe response by all those engaged based on their consensus and aiming at isolating the violators.' 

The US Senate on December 1st unanimously (99 to 0) voted for extension of the Iran Sanctions Act (ISA) for another 10 years. The US House of Representatives had earlier voted for the ISA extension 419 to 1.

ISA, a law initially adopted in 1996 by the US on the baseless allegation that Iran peaceful nuclear energy program is of non-civilian in nature, was to be expired by the end of 2016. To become an anti-Iran Act for another decade, the US Senate’s approval now needs to be signed into law by the US President Barack Obama.

Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei had already made it clear that extension of the ISA would be considered as JCPOA violation if implemented because based on the landmark nuclear deal signed in 2015 by Iran and world six major powers, the US has undertaken not to impose fresh sanctions on Iran.