The over/under for Mario Draghi, and the euro-zone recovery, is $1.35. That’s the euro rate that dealers from UBS AG to JPMorgan Chase & Co. see as the dividing line between success and failure for the European Central Bank’s latest attempts to boost growth and avoid deflation. The currency dipped to $1.3503 on June 5 after the ECB became the first major central bank to take one of its main interest rates negative. The $1.35 level is also just above this year’s low of $1.3477 set in February. A drop below that threshold would presage further losses, strategists say, while a sustained inability to breach it would open ... (full story)