BRUSSELS (Reuters) -Ukraine now has a “very clear European perspective” but the road to EU membership will take time and require hard work, the president of the EU executive told the country’s parliament on Friday. EU leaders last week granted Ukraine candidate status to join the bloc, formally opening a process that is expected to take years before it becomes a member of the union that now comprises 27 countries.. In a speech by video-link to the Ukrainian assembly, Ursula von der Leyen underlined the progress made by the country in its path towards EU membership while it defends itself again…