British scientists say they are unable to verify that the nerve agent used to poison a former Russian spy and his daughter was made in Russia. <br /> The head of the Porton Down defense research lab said they could only identify the nerve agent as military-grade Novichok, but couldn't pinpoint the source.<br />He added that establishing its origin required "other inputs", such as intelligence which only the government has access to. <br /> But he did say the methods used to create Novichok were "extremely sophisticated" and was "something only in the capabilities of a state actor".<br />Russian President Vladimir Putin said he was "bewildered" by the speed at which Prime Minister Theresa May peddled an "anti-Russia campaign."<br />He also demanded that Russia be part of the investigation into the poisoning into Sergei and Yulia Skripal. <br />
