Urged President Shorten to send gas out (7)
I believe the answer is:
pressed
'urged president' is the definition.
'pressed' can be an answer for 'urged' ('press' can be a synonym of 'urge'). I'm not certain of the 'president' bit.
'shorten to send gas out' is the wordplay.
'shorten' becomes 'pres' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'to' says to put letters next to each other.
'gas' becomes 'N' (chemical symbol for nitrogen).
'out' indicates named letters should be taken away.
'send' with 'n' removed is 'sed'.
'pres'+'sed'='PRESSED'
Can you help me to learn more?
(Other definitions for pressed that I've seen before include "crushed juice" , "Ironed" , "Squeezed hard" , "under some strain" , "Urged U crushed" .)