Saudi Arabia has agreed to buy the Russian S-400 surface-to-air missile system.

An analyst says Moscow's plan to boost its military presence in Syria might be a reaction to US decision to send new weapons to militant groups in the war-torn country in an attempt to leave Russia in a quagmire.

Taiwan is to test its latest missile system in the US.

Russian President Vladimir Putin vows to neutralize any threats posed by the US missile system deployed in Eastern Europe.

The head of Russia's strategic missile forces says Moscow has arms that can neutralize the US so-called anti-missile shield.

An activist says Israel seeks to blame the US for the inefficiency of the Iron Dome system to pressure Washington for more funds.