David Pollock and Mohammad Yaghi wrote an article for the Washington Institute for Near East Policy about Egypt's renewed anti-Iran policies:
In the last week, Egypt has moved against Iran and its allies in the Arab world. Cairo arrested a Hizballah cell that was preparing terrorist operations on Egyptian soil, organized a campaign against Hamas weapons and money smugglers in the Sinai Peninsula, and stepped up efforts to displace Qatar -- an Iranian sympathizer -- as a mediator on Sudan, Lebanon, and other inter-Arab issues. It remains to be seen whether this policy shift will become a sustained part of a grand strategy to restore Egypt's leadership among Arab states or, instead, a more-defensive approach designed to parry previous humiliations from Iran's allies. It is apparent, however, that Cairo is sending a signal to Washington that the "nuclear file" is not the only -- or even the most urgent -- aspect of the Iranian threat.
Here the whole article