Angela Merkel, Donald Trump voice concern about Putin's 'invincible' weapons

"Listen to us now", Putin said, prompting a standing ovation from the audience of top officials, lawmakers and celebrities.

Standing before his country's Federal Assembly, the president claimed that Russian Federation had developed a new range of "invincible" nuclear weapons, capable of reaching "anywhere in the world" and bypassing opposing missile defence systems.

To give a better understanding of Avangard's capabilities, a video was shown at the State of the Nation address, where Avangard was demonstrated being released from the booster rocket and maneuvering in the atmosphere bypassing missile defense en route to a target.

Alexey Muraviev, an associate professor of national security and strategic studies at Curtin University, made the comment after President Vladimir Putin this week boasted of an "invincible" nuclear arsenal that could strike anywhere in the world.

Dismissing it as a "cheesy video", State Department spokeswoman Heather Nauert said, "we don't think it's responsible". "But in this case, if it's a threat to the very existence of the Russian state", he said.

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"Russia has been developing destabilizing weapons systems for more than a decade in direct violation of its treaty obligations".

And she engaged in some American chest thumping.

These weapons may be bigger and better, and the US may have bigger and better weapons too, but the essential situation remains the same-as has been the case for decades, each country has the capacity to destroy the other in a hellfire of nuclear weapons, and neither country has to the ability to destroy the other in a way that avoids instant and fatal retaliation.

"We don't regard that as the behaviour of a responsible global player", spokeswoman Heather Nauert said.

"Putin's disclosure of their development of a nuclear-armed, nuclear-powered cruise missile is just the latest in a string of new and horrific Russian weapons created to intimidate and coerce the USA and our allies. We're not surprised", Pentagon spokeswoman Dana White said.

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The Defense Security Cooperation Agency said Ukraine has asked President Donald Trump's USA administration for permission to buy 210 missiles and 37 launchers at a cost of around $47 million. In what amounted to a state of the nation address, he hailed a new generation of Russian intercontinental ballistic missiles, underwater drones and nuclear-powered cruise missiles.

Geist said, ideally the Russians would carry the Status-6 in a submarine and park in the Arctic, where it would be hard for US subs to find them. It is reminiscent of U.S. work in the 1960s on a similar weapon, dubbed "The Big Stick", but ultimately scrapped.

A former Central Intelligence Agency director suggested Friday that President Donald Trump wishes he could behave more like an authoritarian in the style of Russian President Vladimir Putin, saying the US President has "autocratic envy" of his Russian counterpart.

The nuclear-tipped torpedo for instance - what today we would call an unmanned underwater vehicle - is a project that dates back in one form or another to Soviet days.

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