habur turkey turkish president tayyip erdogan threaten monday cut pipeline carry oil northern iraq outside world intensify pressure kurdish autonomous region independence referendum erdogan speak shortly prime minister binali yildirim say ankara could take punitive measure involve border air space kurdistan regional government krg referendum would recognize outcome vote begin monday despite strong opposition iraq central government neighbor turkey iran significant kurdish populations well western warn move could aggravate middle east instability erdogan grapple long-standing kurdish insurgency turkey southeast border northern iraq say separatist referendum unacceptable economic trade security counter-measures would take stop short say turkey decide close oil flow hundreds thousands barrel oil day come pipeline turkey northern iraq make clear option table let see channel northern iraqi regional government send oil sell say speech tap moment close tap do yildirim say ankara would decide punitive measure kurdistan regional government krg talk iraq central government energy interior customs ministries work measure evaluate step regard border gate air space take step quickly yildirim tell turkish broadcasters iraqi soldier arrive turkey monday night join drill turkish side border near habur area southeast turkey military say statement iraq defense ministry say two armies start major maneuver border area local media say turkey block access krg via habur border cross iraq ankara customs minister deny say habur remain open tight control traffic accord state-run anadolu agency however erdogan late say traffic allow cross turkish side border iraq maruf ari 50-year-old truck driver one cross back turkey early monday morning say closure gate would ruin livelihood border close harm us job 20 years make lot money around 1,000 lira 285 month gate close go hungry unite state western power also urge authorities krg cancel vote say would distract fight islamic state share turkish airlines direct flight northern iraq tumble 6.5 percent underperform 1.78 percent decline bist 100 index turkey currency lira also weaken turkey take kurdish television channel rudaw satellite service turksat turkish broadcast official tell reuters turkey long northern iraq main link outside world see referendum grave matter national security turkey region large kurdish population fight three-decade insurgency mainly kurdish southeast saturday turkey parliament vote extend year mandate authorize deployment troop iraq syria still ankara unlikely make rash move come sanction krg say nihat ali ozcan professor political science international relations tobb university economics technology close border gate cancel international flight final step cut pipeline discuss say military pressure use directly indirectly turkish army launch military exercise involve tank armor vehicles near habur border cross week ago expect continue least sept. 26. additional units join exercise enter second stage turkey military say statement third phase drill would hold sept. 26 iraqi soldier arrive monday night would join military also recent days carry daily air strike kurdistan workers party pkk target northern iraq group commanders base pkk launch separatist insurgency 1984 40,000 people kill since designate terrorist group turkey unite state european union militants northern iraq launch cross-border mortar attack turkey hakkari province hit temporary residence use refugees interior ministry say one refugee kill several others injure say eastern agri province near border iran individuals think kurdish militants open fire mini-bus carry foreign nationals ministry say three people kill four wound attack say 3.5153 liras 'we tap turkey 's erdogan threaten oil flow iraq 's kurdish area