preferential to whom ? In Middle East carved between Israel and Iran where one will see place for 300 millions of Arabs ? Will they prefer Israeli paradise or Iranian one ? What about Turkey, after all former master of most of Middle East and still formidable power .
What makes you thinking that British forced partition is better than Israeli / Iranian forced unification?
Israel's strength comes not from internal power although that is formidable. It's based on unwavering US support and division among their Arab neighbours. Neither fact is eternal. All it takes is US antisemitic president preoccupied with troubles at home or Latin America and at the some time some Arab unifier who manages to rise to prominence before is killed by Israelis and picture in the area may be changed .
Atomic bomb if great deterrent but if , God forbid, would be used, retaliation will be much more devastating for country of 30000 sq. km than one 10 or 30 times bigger.