event they deploy chemical or nuclear weapons and we don't know the new decisions because amid the military stale mate in ukraine, hanging over today's meeltdings is this question -- how far is putin willing to go? in his address to nato this morning, president zelenskyy pushed nato to further ramp up military assistance claiming russia has used phosphorous bombs, an allegation that u.s. officials say they cannot yet confirm. in his press conference following nato's emergency meeting this morning, jens stoltenberg would not confirm the allegations either as he announced the deployment of four battalions to shore up the eastern side of the alliance and he aid the alliance was taking additional precautions. >> we agreed to do including cybersecurity systems and equipment to help ukraine protect against biological, chemical, radiological, and nuclear threats.