Rahu in Cancer indicates foreignors in your home, with poison and sudden strange events, so this indicates sabotage, poison gases released on people, etc. There will also be much movement of people across oceans and changing of lands, and trouble in many homes, as well as poisoned water, - oil spills for example. Jupiter will act when he gets to Aries, this will be good and bad. Bad because many pent up energies are going to be released. People will do things, they've been thinking and praying about.
Contemplation turns to action.
Expect many events. On the good side, it indicates overall that good thought will come to help the situation. So both will happen. It will be a good time for spiritual people, and their thoughts on that matter, but also a very active time. I'm an optimist.