Rappler's latest stories on Novichok nerve agent
The State Department says the action is aimed at punishing President Vladimir Putin's government for having 'used chemical or biological weapons in violation of international law'
'Investigators believe they have identified the suspected perpetrators of the Novichok attack through CCTV and have cross-checked this with records of people who entered the country around that time,' a source with knowledge of the investigation says
Charlie Rowley 'is no longer in a critical condition,' Lorna Wilkinson, director of nursing at Salisbury District Hospital in southwest England, says
Novichok is a military-grade nerve agent developed by the Soviet Union during the Cold War
(UPDATED) Kremlin spokesman Dmitry Peskov tells reporters the case is 'very worrying' but Russia had no information 'about what substances were used and how they were used'
In total, 171 people will leave the country, state news agency TASS reports Russian ambassador to the US, Anatoly Antonov, as saying