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run code in 150+ php & hhvm versions
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<?php $a = 'Ukraine - Russia or Iran - Argentina'; preg_match('/.+-{1}/', $a, $m, PREG_OFFSET_CAPTURE); var_dump($m);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(1) { [0]=> array(2) { [0]=> string(26) "Ukraine - Russia or Iran -" [1]=> int(0) } }