"This is a big question mark as of today. Looks like they have a hidden agenda.”

Earlier he had already said that the standstill in the talks for lifting anti-Iran sanctions and reviving the nuclear deal, officially known as the Joint Comprehensive Plan of Action (JCPOA), was irrational, and called for the resumption of the negotiations implicitly.

He twitted on January 6, “Alleged supplies of drones is a clumsy excuse for freezing (if not killing) the #ViennaTalks on #JCPOA. Looks like the US + E3 have a temptation to move to 'Plan B'.

"Big mistake. It’s difficult to expect that such a plan can be a credible option. More likely just a non-starter.”

Sergei Ryabkov, the deputy foreign minister of Russia, emphasized that there is no logical replacement for the JCPOA and that the deal is not yet dead.

According to the Russian official, the signatories to the agreement underlined their commitment to the principle understanding envisaged in the deal, which helped successfully maintain stability and strengthen regional security until the minute the US withdrew the accord unilaterally.

Moreover, High Representative of the European Union for Foreign Affairs and Security Policy Josep Borrell has recently said that there is no better option for the JCPOA, so he will continue his efforts to pave the way for resuming the implementation of the agreement.

European Commission spokesman Peter Stano said in a news conference in Brussels on Tuesday that the European Union is focused on summarizing the negotiations, and the bloc will make all-out efforts to find a way to pave the ground for full implementation of the nuclear deal.

The talks in Vienna, Austria, to remove anti-Iran sanctions have stopped due to the United States' hesitance in decision-making and proposing new demands. The experiences of recent years indicate that the White House keeps on pursuing the failed policy of the Trump administration in putting pressure on Iran despite their claim on being committed to diplomacy.