KYIV, Ukraine (AP) – Ukraine says Russia seemed to adopt a more constructive tone in the latest round of talks aimed at halting fighting. However, Russian troops continued to bombard Kyiv on Tuesday with long range fire. Ukrainian presidential aide Ihor Zhovkva said the talks between Russian and Ukrainian representatives over video have become more constructive, and Russia has stopped airing its previous demands for Ukraine to surrender. Zhovkva said that Ukrainian representatives feel “moderately optimistic” after the talks. The conversations came as the leaders of three European Union countries – including Poland, a NATO member on Ukraine’s doorstep – visited the embattled capital in a bold show of support.