Visas needed for Gaza Strip visits
Foreigners must now obtain visas to enter the Gaza Strip, a spokesman for Hamas has said.
Ihab Ghussein's comments come a day after the United States warned it would cut £61 million in aid money if Hamas continues its "unwarranted audits" of local American non-profit organisations.
Hamas recently shut down a US-financed group that refused an audit.
Mr Ghussein says the government must know who is staying in Gaza in order to protect foreigners.
If implemented, the visa demand could complicate the work of international aid groups in Gaza since the US and UN consider Hamas a terrorist organisation.
As such, many international aid groups are prohibited from having direct contact with Hamas or providing the Islamic group with cash.