The DDS have conducted a test of it's biogenic weapons, the first use of these weapons which are directed at causing ecological damage to a target planet since the war with the Rectoids. In the test a specific plant species was wiped out on WEXU990171, an uninhabited planet in the Rim Worlds which is in the same system as Charlotte.
The test is thought to be intended to warn the Bolitic of the power of these weapons in the DDS armoury. In a suspiciously convenient leak to the media the DDS claim they know the DNA codes of all the major food crops on Castarian the Bolitic homeworld.