" I was more referring to the difficulty an EU based partner might have trying to strike a deal for all of Europe, not knowing where the currencies may be headed or worse."
Personally, I don't think it should or will affect negotiations in any manner. Just think about what you're saying for a second - then realize that the entire global economy is so closely linked nowadays that this currency issue is going on thousands of times per day in every sector that exists - nothing special about ARNA that would make things more difficult for them than any other company IMO. American headquarters, Swiss mfg plant, Japanese distributor - thousands of companies have setups like that - most of which use the US dollar because it's considered the most stable currency in the world.
Off the top of my head, the only thing that can concern a typical investor re: currency movements, is that foreign companies typically pay dividends in their country's currency, so the exchange rate at the time of payment can affect how many US dollars you actually get - plus, the brokers typically skim some off the top to "pay the costs of the exchange transactions", which if'n you ask me is BS. For instance, the last NATDF div I got in my TDA account was supposed to be $0.045/shr, but what I (and all other US owners got) was more like $0.04434, 1.7% less than advertised - might seem to be a teeny tiny amount, $0.0008/shr, but multiply that by 1 billion shares and you're talking serious money! Actually, just though of a 2nd thing cuz it affected some trades I made a few months ago - I bought stock listed on the Toronto Stock Exchange (TSX) - the CA Loony/US dollar conversion slightly altered what I actually paid for the shares, meaning what they cost then wouldn't be the same now unless the exchange rate is exactly the same (not likely, as rates change daily).
One thing a lot of companies can and do to protect themselves from currency swings on debt instruments (loans, bonds, etc) is called an "interest rate swap", not to be confused with the toxic credit default swaps (CDS) of the type that recently torpedoed JPMorgan. Anyone who owns stock in a John Fredriksen company knows how big currency swings and rate swaps can affect the bottom line, as in by hundreds of millions of dollars - sometimes good, sometimes bad, usually averages out to even over time.
Okay, guess I went a bit off tangent there, but you'ns are probably a bit used to that by now, eh? ;-)