2 0 1 7 , ▁Pope ▁Francis ▁met ▁with ▁U . S . ▁President ▁Donald ▁Trump ▁in ▁V at ican ▁City , ▁where ▁they ▁discussed ▁the ▁contributions ▁of ▁C athol ics ▁to ▁the ▁United ▁States ▁and ▁to ▁the ▁world . ▁They ▁discussed ▁issues ▁of ▁mut ual ▁concern , ▁including ▁how ▁religious ▁communities ▁can ▁combat ▁human ▁suffering ▁in ▁crisis ▁regions , ▁such ▁as ▁Sy ria , ▁Lib ya , ▁and ▁IS IS - control led ▁territory . ▁They ▁also ▁discussed ▁terror ism ▁and ▁the ▁radical ization ▁of ▁young ▁people . ▁The ▁V at ican ' s ▁secretary ▁of ▁state , ▁Pietro ▁Par olin , ▁raised ▁the ▁issue ▁of ▁climate ▁change ▁and ▁encourag ed ▁Trump ▁to ▁remain ▁in ▁the ▁Paris ▁Ag re ement . ▁At ▁the ▁ 2 0 1 7 ▁World ▁Food ▁Day ▁ceremony , ▁Pope ▁Francis ▁re iter ated ▁that ▁" we ▁see ▁the ▁consequences ▁[ of ▁climate ▁change ] ▁every ▁day " ▁and ▁that ▁we ▁" know ▁how ▁the ▁problems ▁are ▁to ▁be ▁faced " ▁"[ t ] h anks ▁to ▁scientific ▁knowledge ." ▁He ▁said ▁that ▁" the ▁international ▁community ▁has ▁drawn ▁up ▁the ▁necessary ▁legal ▁instruments , ▁such ▁as ▁the ▁Paris ▁Ag re ement , ▁from ▁which ▁however ▁some ▁are ▁withdraw ing . ▁There ▁is ▁a ▁re - emer gence ▁of ▁the ▁non ch al ance ▁towards ▁the ▁del icate ▁bal ances ▁of ▁e cos ystem s , ▁the ▁pres umption ▁of ▁being ▁able ▁to ▁manipulate ▁and ▁control ▁the ▁planet ' s ▁limited ▁resources , ▁and ▁gre ed ▁for ▁profit