EVERY MORNING, Ukrainians in Ireland check their phones for news about rocket strikes in their homeland, calling family members to make sure they’re alive. Now they face a new source of anxiety – the fact that Donald Trump’s push for negotiations with Russian President Vladimir Putin excludes Ukraine itself. Trump and Putin conducted what the US President called a ”lengthy and highly productive” phone call just last week, marking a significant warming of relations between the two nations. Ukraine’s leaders were left out of the US-Russia summit in Saudi Arabia this week, and in his latest comments on the conflict...