Xi Jinping gave a personal pledge to give political support to Kim if US negotiates in bad faith. The Summit cancellation and Libya model farce is evidence that US is negotiating in bad faith, so Xi will see no use to continue harsh sanctions.
China's enforcement of sanctions was to get NK to the table. If it is US that makes trouble and cancelled summit, then NK claims they made sufficient peace overtures, China will give partial sanction relief.
Trump can't attack NK, because Xi will visit Pyongyang in June per Kim's invite.
So Trump has lost a lot of negotiating power by alienating Moon (didn't notify him prior to cancel), alienating China (trade war tariffs) and Kim (trolling hostages and nuke test site )
It is a mess and US has blame too. It's not all on NK as some people like to portray.
China's enforcement of sanctions was to get NK to the table. If it is US that makes trouble and cancelled summit, then NK claims they made sufficient peace overtures, China will give partial sanction relief.
Trump can't attack NK, because Xi will visit Pyongyang in June per Kim's invite.
So Trump has lost a lot of negotiating power by alienating Moon (didn't notify him prior to cancel), alienating China (trade war tariffs) and Kim (trolling hostages and nuke test site )
It is a mess and US has blame too. It's not all on NK as some people like to portray.