I trade world maps with Roosevelt (I have to throw in 40 gold) and find ...
I guess there are two cities that we need to take out. I send one of the galleons near our home ports south to the ex-Russian lands and whip two Grenadier (other forces are too far away and the WW is starting to kill us).
I also trade Deer (his) for Spices (ours) with Roosevelt and when Military Tradition comes in (Turn 1), I trade it to him for Corporation, World Map and 30 gold (basically got the gold back that I gave him on Turn 0. I also notice that Gandhi doesn't have Liberalism but the best I can do is World Map and 60 gold - he is probably researching it - I make that trade.
Communism (1 of the techs that opens up a permanent alliance) is due in 8 pre-corporation trade and 7 after the corporation trade. However, given our current economy, we cannot afford to tech that fast.
In 1622, ...
... and so he is down to just 1 city. Then in 1628 ...
I imediately sign a Defensive Pact with Gandhi. I dial down research to build up some cash, then back up to 100% to bring in Communism in 4 turns. I then try for the Permanent Alliance when Communism comes in. Unfortunately, Gandhi says "We're doing fine on our own."
We should try for the Permanent Alliance each turn. We should not declare war on anyone (will set the PA back). However, he is willing to trade Communism for Replacement Parts, World Map and 80 gold.
I start ferrying our troops to Cyrus's holdings - placing them in Ghandhi's land ...
I have also started building some troops for this campaign too. However, we cannot start this until we have our PA - this must be our top priority at the moment. Unfortunately, PAs are just a matter of time. I have heard that it sometimes takes 40 turns under a DP before the AI will sign a PA. However, as we shared in a war, the number of turns should be less. I would suggest checking each turn or so.
There are some cities of ours that are under Gandhi culture pressure. We also have some of Gandhi's cities under our cultural pressure. When we sign the PA, you will see those cities jump out and claim their BFC regardless of cultural pressure. This will be really good for our cities but we could lose some gems etc to Gandhi - nothing we can really do about that.
So, there you have it ... the marching orders are just tech, keep Gandhi happy, no offensive wars (but prepare for one the turn after we sign the PA).