Jim Mattis and four other former defense secretaries called President Donald Trump’s ouster of Gen. CQ Brown and other top officers dangerous and unjustified.

Finance ministers and central bankers from the G20 top economies gather in South Africa on Wednesday and Thursday, for a meeting marred by the absence or curtailed attendance of key members and disputes over the main issues of climate, debt and inequality.

This comes as the Trump Administration seeks to rid the military of leaders who support diversity and equity in ranks.