Trump's an idiot but, imo, this strike was an uncommonly clever move as most of those who will be doing the usual posturing and threatening and vowing vengeance etc will be wondering how the fuck they knew when and where to aim the drones and there'll doubtless be many Middle Eastern dictators/tyrants who will be distinctly uneasy in case they're wasted on their next car ride, or while they're relaxing in their palatial villas and mansions.
Trump may take the credit but there's a far more subtle hand at play here and the necessary intelligence to formulate this strike can only have come from one source which is patently NOT any of the American intelligence agencies.
Nevertheless, I deplore the bloodshed that's inevitably going to follow this act and can only hope that Boris Johnson shows he's a statesman worthy of the title and is not another Blair whose determination to cling on to Dubya's coattails caused many of the ills that beset the Middle East today.