No alternative': All parties must comply With Iran nuclear deal

'Russia has consistently adhered to the position on preserving the viability of the so-called Iran deal. We believe that it has no alternatives and that it should be implemented by all parties,' Peskov said when asked how Russia will block attempts to sabotage the deal.

He added that no contacts between Russian and US presidents Vladimir Putin and Donald Trump are planned on JCPOA yet.

In January, the United States and the E3 group created a working group to discuss approaches to Iran and concerns with the nuclear deal.

The US side is taking steps to amend the accord. On January 30, US President Donald Trump asked the Congress to address the flaws in the 'terrible Iran nuclear deal.' Two weeks earlier, Trump announced he would waive sanctions on Tehran as required under the JCPOA for the last time. The United States is expected to announce its decision on the agreement before May 12 deadline.

On July 14, 2015, China, Germany, France, Russia, the United Kingdom and the United States (collectively referred to as the P5+1 group) signed the JCPOA with Iran. The accord stipulated a gradual lifting of anti-Iran sanctions in exchange for Tehran's assurances that its nuclear program would remain peaceful.

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