Re: Hamas free second hostage; but two Arabic-speakers still missing
^^
As you can see, even Israel considers that to be too much of a high-risk option to do.
They have 3 options
1) Take the war to other countries and hope that makes them stop supporting Hamas - but Israel, under both left and right wing governments has been unwilling to do this because of the risk of igniting another regional full scale war
2) Continue the current policy of trying to cut Hamas off - which for nearly 30 years has led to nothing but Hamas becoming militarily stronger, better armed, and more popular year on year
3) Try to directly or indirectly engage diplomatically with Hamas