War Is Messy

The roster of antiquities damaged in the war in Yemen runs long. Missiles fired from the coalition's planes have obliterated a museum (where the fruits of an American-Yemeni archaeological dig were stored), historic caked-mud high-rise dwellings, 12th century citadels and minarets and other places whose importance to humanity's heritage has been recognised by the UN. The Great Dam of Marib, a feat of engineering that was undertaken 2,800 years ago, has been struck four times, most recently on August 18th. Antiquities experts fear for the oldest surviving fragment of the Koran, in a six-month war which has killed over 4,000 and injured 20,000.

But apparently out of deference to their Saudi and Gulf friends, Western powers have yet to make much comment on the destruction in Yemen, whether humanitarian or cultural. They have expressed justified horror over cultural losses in Syria, such as Islamic State's demolition of the Bel temple in Palmyra. They willingly subscribe to the general principle of protecting religious and cultural objects from war.

Yet Western officialdom has been tongue-tied about Yemen.

  Economist

According to the article, the US is discreetly helping finance an effort to protect some antiquities, but doesn't want that widely known " for fear of embarrassing its Saudi and Gulf allies" who are busy destroying them.

...but hey, do what you want...you will anyway.