Pope Francis was recently in Korea where he delivered several reflections in English. He was also able to ad lib in English but switched to Italian when he wanted to expand on a topic.
I speak French and Italian well enough to express my condolences to a grieving family. IOW, one need not be fluent in any language to comprehend the suffering of another and convey one's sympathy and prayers.
Yes. Actions are the language of love. I’m sure whatever language he spoke conveyed his love to the Foley family be it English or not.