the PA is a failed state before it even starts. they have no control of any borders, none with air or water either. they are completly dependant on Israel. they have no airport or seaport or their own currency. If the Pa would once again declare a state unilateraly, not only will the US veto any such vote, the US is talking about once again withholding funds from any UN agency that would recognise such a entity, as the US did back in 1988. the 8% to 10% economic growth that the PA currently enjoys, will bring their economy completely to a halt, especially after Israel terminates any work visas that are issued, that allows the pal arab employment in Israel proper. so in the end, there is nothing gained by the PA declaring a state unilaterally, but it would release Israel from any Oslo era agreements and with Hamas being a part of their government, will also end American financial aid.
First refugees travelling on Hungarian bus arrive at Austrian border (Reuters)