The Irish premier’s annual Saint Patrick’s Day visit to the White House is normally a joyful affair — but this year thewar in Gaza cast a shadow darker than a rainy Dublin sky. Irish Prime MinisterLeo Varadkar and President Joe Biden \– who loves to celebrate his Irish ancestry — found themselves having to paper over a deep split over Israel’s handling of the conflict. Varadkar has been one of Europe’s most critical leaders over the situation in Gaza, calling for an immediate and permanent ceasefire. Biden meanwhile continues to send key US ally Israel weapons, while pushing for a six-week …