KYIV/WARSAW (Reuters) – Kyiv said on Friday Ukrainian experts had started work at the site where a missile killed two people in southeastern Poland, as the countries discuss what role Ukraine may play in an investigation into the incident. Poland and other Western states have said the missile that landed in Przewodow, a village near the border with Ukraine, was a Ukrainian air defence missile that went astray in pursuit of a Russian missile. Kyiv denied this, saying it has evidence of a “Russian trace” in the blast, and demanded access to the site and a role in the investigation into the cause…