BRUSSELS (Reuters) – The EU’s executive said on Sunday that Europe was facing its biggest humanitarian crisis in many years following Russia’s invasion of Ukraine, and the number of Ukrainians internally displaced by the strife could be more than 7 million. “We are witnessing what could become the largest humanitarian crisis on our European continent in many, many years. The needs are growing as we speak,” said Janez Lenarcic, European Commissioner for Humanitarian Aid and Crisis Management “So for the humanitarian situation overall, the currently expected number of displaced Ukrainians is ove…