donetsk people's republics. "please do this." the kremlin�*son began, two and a half weeks ago. "this war can stop when you want it to, "you just need to lay down your arms, surrender, "give in to all our demands and forget about being a part "of western europe." frank gardner, bbc news. gregory koblentz is director of the biodefense graduate program at george mason university. in the past, he has briefed the un security council about weapons of mass destruction. in your assessment, what is the arsenal of chemical biological weapons available to president putin if he decides to use them? , , . them? russia inherited the remains of _ them? russia inherited the remains of the _ them? russia inherited the remains of the soviet, - them? russia inherited the i remains of the soviet, former soviet chemical biological weapons, which was massive. russia claims it destroyed their weapons facilities from those programmes but the reality is we don't know what they held onto. the one thing we do know is that they have the novichok nerve agent, developed du

donetsk people's republics. "please do this." the kremlin�*seeks ago. "this war can stop when you want it to, "you just need to lay down your arms, surrender, "give in to all our demands and forget about being a part "of western europe." frank gardner, bbc news. john gilbert is a retired colonel and a chemical, nuclear, and biological weapons inspector. 0verfour decades, he's been part of chemical weapons negotiating teams in moscow, geneva and the hague. he's in south carolina. thanks very much for coming on the programme.— thanks very much for coming on the programme._ so, j the programme. thank you. so, first of all— the programme. thank you. so, first of all them, _ the programme. thank you. so, first of all them, how _ the programme. thank you. so, first of all them, how do - the programme. thank you. so, first of all them, how do you - first of all them, how do you assess the threat and the risk of chemical and biological weapons being used by russia? well, one of the things we are seeing is that putin seems to be increasingly frustrated

s-300 and two multiple rocket launchers. and the people's militia of the donetsk republic reported two ukrainian helicopter, on which the nationalist thugs tried to escape from mariupol. all these appeared the first photos of the dpr authorities more than once warned militants from the city not to release their only way out to lay down their arms. the political leadership in kiev made another attempt to evacuate the head of ukrainian nationalists from mariupol this morning by our means of anti-aircraft equipment near mariupol. two enemy helicopters were found destroyed, one of which fell in the area inhabited by taraban specify the place where the second helicopter fell and the number of liquidated nationalists. in addition, our ministry of defense told about 10 minutes, established by the ukrainian security forces, they broke anchor and are now drifting in the black sea. it is aware of the threat of transport and cargo. the courts of all the black sea countries were informed by the official representative of our department. igor konashenko. one of the mines was recently neutralized by turkish sailors, the second by romanian ones,

state tv�*s reporters tend to be embedded with troops fighting in the east with the so—called donetsk and luhansk people's republicskyiv and kharkiv is minimal. they are calling it using briefing for the russian defence ministry and this is reeling off a list of military sites, ukrainian military sites which are reportedly being destroyed by russian forces. ok. reportedly being destroyed by russian forces.— reportedly being destroyed by russian forces. . russian forces. 0k, we will leave it there for now _ russian forces. 0k, we will leave it there for now but _ russian forces. 0k, we will leave it there for now but thank _ russian forces. 0k, we will leave it there for now but thank you - russian forces. 0k, we will leave it there for now but thank you very i there for now but thank you very much indeed forjoining us there. the latest in the russia median system. with me is to people who have escaped ukraine and they're trying to get visas to stay here in the uk. i hope you can hear us now. i know you are still looking at the system it is the gita here can you hear us? hello. my name is olga and this is my sister.