:::::::::: This solution of giving both versions works for me. In such case and would be connecting between two sources so it is unacceptable or even meaningless ("Netanyahu felt threatened and PNA blocked the transfer"). 
 ::::::::::Two statements in the same source (where they are not connected) can be synthesized to imply a claim not in the source using and: "Before the current operation began, Hamas was at one of the lowest points in its history and on June 29 or 30 it restarted the rocket bombardment of Israeli territory". Even if there was a full stop, mere placement of sentences in a sequence implies causality: "It is raining. I will not leave my home today" - no, not because of the rain, I just don't feel like it.