The Atlantic’s James Fallows added that countries like China and Russia are likely to exploit the revelation, going back and calibrating their sensors accordingly for future detection.Some may want to be charitable, cutting the amateur president some slack because he doesn’t have any background in or understanding of sensitive intelligence, but let’s not forget that this is the second time – that we know of – that Trump has been caught sharing classified information with a foreign country for no apparent reason.The significance of a story like this goes well beyond marveling at Trump’s ineptitude. As the president develops a reputation as someone who’s recklessly blurting out secrets to foreigners, it’s easy to imagine our allies abroad withholding intelligence from U.S. officials, U.S. officials withholding intelligence from the White House, or both.Circling back to our previous coverage, it’s also worth pausing to appreciate what Republicans used to say about this subject. Last year, for example, House Speaker Paul Ryan (R-Wis.) called for intelligence agencies to deny Clinton intelligence briefings for the rest of the campaign season. The message was straightforward : “It’s simple: Individuals who are ‘extremely careless’ [with] classified info should be denied further access to it.”The day before Ryan’s declaration, 14 Republican senators introduced legislation to revoke Clinton’s security clearance and demand that anyone in the executive branch who shows “extreme carelessness” in their handling of classified information be denied access to that information. (They no longer want to talk about the issue.)The same day, then-RNC Chairman Reince Priebus said those who’ve mishandled classified information “have had their security clearances revoked, lost their jobs, faced fines, and even been sent to prison.” Soon after, Rep. Darrell Issa (R-Calif.) asked , “What do I say to the marines in my district when Hillary Clinton handles classified information in a careless way yet has no ramifications?”