It has been quite a birthday celebration. Ahead of the fifth anniversary of M+ on November 12, the directors of New York’s Museum of Modern Art (MoMA) and Paris’ Centre Pompidou touched down in Hong Kong to finalise a tripartite alliance with the young museum. The formal pact will see two of the world’s pre-eminent modern art museums share collections and programming with M+ on equal footing. On October 31, it was signed, sealed and toasted with high-wattage glamour at the museum’s fundraising...