Hussein Ibish from Open Zion, and what the crackdown suggests about the position of Hamas in Gaza, having substituted its alliance with Iran with the hopes of increased ties (and aid) from the Morsi government, and from the governments of Turkey and Qatar:

Instead [of Iran], [Hamas] sought funding from Qatar and Turkey, and political and logistical support from the now-overthrown Muslim Brotherhood government in Cairo. They never got much support from the Morsi government except kind words, tea and sympathy. During his rule, the Egyptian military clamped down on the border area and the smuggling tunnels more harshly than they had during the former dictatorship of Hosni Mubarak.

 

Nonetheless, Hamas hoped and expected that eventually the Islamist regime in Egypt would create more amenable policies, and that this would be linked to the emergence of Muslim Brotherhood governments in many other Arab states.

Those hopes are now dashed. On the contrary, the new Egyptian government is, if anything, openly hostile to Hamas. They are being investigated not only for colluding and collaborating with Sinai extremists, but for various forms of "interference in internal Egyptian affairs." One example of this is the investigation that has been launched into their alleged participation in a 2011 jailbreak that freed Morsi and a number of other key Islamist prisoners. Hamas angrily denies any "interference" in Egyptian affairs, understanding that this perception is not only exceptionally dangerous in Egypt, but also in the broader Arab world.

. . . .

Now the situation is totally out of control. Hamas is completely at odds with the new Egyptian government, increasingly unpopular with the Egyptian public, and has very few options left. For now its control of Gaza remains unchallenged. But if the situation continues to deteriorate, that could start to change quickly. Hamas has accused Egypt of wanting to resume the direct control of Gaza it had from 1948-1967.

No Egyptian government would possibly want or allow that. But even such a silly accusation reflects the growing sense among Hamas leaders that, like their erstwhile friend Mr. Morsi, their days in power may also be numbered.

Edited to delete stuff that should be dealt with in a separate thread.