16. Tackling big boys
During world (or basically any greater conquest) it's important to have something to eat between attempting to take on the big boys. Kilwa is going to be annexed in this war and with our great monarch admin power to core stuff is not an issue, the combo of disinheritance and Ottoman government is quite potent when it comes to strong monarchs.
Russia is busy in a huge war against Poland and Spain, no better way to say "come to take my land

".
According to a war screen, the numbers are on our side.
And casualties say that army quality is also on our side, 120% discipline vs. 101% discipline.
WIPE
Our subject Andhra spanning almost over one third of Indian subcontinent gets integrated, the area without trade companies shows the size of our former subject.
Superiority has been achieved.
Russia is cut of Siberia completely which means eating Russia will require a lot lower investment in the future compared to a situation where they would colonize entire Siberia.
Remember, small stack here and there is healthy
Soo, you're saying to me, that Ming is embroiled in a war against Japan, which is a stalemate, does not have manpower and has 0 mandate (which means zero mercs)? Looks like an invitation to their land
Troops, we're going to vacation
Actually, attacking Ming without checking their military technology level was a small mistake as they've managed to reach tech 21 which provides military tactics sooner than us (look at the tactics difference).
Even with +50% damage taken, Ming is capable of punching hard, especially with tactics advantage. Luckily for us military tech 21 was unlocked quite soon into war so the Ming advantage was almost immediately gone.
Sure, Ming, send your troops to wander steppes while I am besieging your forts
In the end the war resulted in complete victory, but the combat casualties show that Ming is not to be underestimated even when sitting on zero mandate (and especially on higher mil tech).
All of the Ming's fortifications are gone (although they were just level 2 forts, as with boosted force limit coming from very hard, the AI's priority is to reach force limit and after that it upgrades forts).