The USA produces the lion's share thanks to USG subsidies, then the USG comes over to the old world countries and the commerce reps start faulting the countries for a.) blocking American agricultural imports or b.) subsidizing their own local agriculture.

Since the American almonds are also produced at a much larger scale, they can also underprice the locally produced almonds ridiculously, which further disincentivizes local farmers from growing almonds and forces them to grow something else.