Iran’s top security official said on Wednesday that the 2015 nuclear deal has become an “empty shell” for the Islamic Republic, adding that Tehran will not negotiate with the West over its ballistic missile program and regional activities.

Axar.az reports that“the US and Europe failed the test of fulfilling their obligations under the JCPOA,” Ali Shamkhani, secretary of Iran’s Supreme National Security Council, wrote on Twitter, using the acronym for the formal name of the 2015 Iran nuclear deal, the Joint Comprehensive Plan of Action.

Shamkhani said the nuclear deal has become an “empty shell” for Iran from an economic standpoint.

“The JCPOA has now become an empty shell for Iran with regards to the economic field and the lifting of sanctions,” he wrote.

Shamkhani added that Iran will not enter negotiations with the West that address anything beyond the nuclear deal. Iran has long maintained that issues beyond the nuclear file, such as its ballistic missile program and regional activities, are non-negotiable.