Political instability and poor economic performance can also have a negative impact on a currency. Politically stable countries with robust economic performance will always be more appealing to foreign investors, so these countries will draw investment away from countries characterised by more economic or political risk. Furthermore, a country showing a sharp decline in economic performance will experience a loss of confidence in its currency and a movement of capital to currencies of more economically steady countries. These are just two simple examples of what can affect foreign exchange rates and the kind of things traders consider when developing forex trading strategies.  
Arbitrage is based on the premise of the forex trader trying to make a gain from small differences (of the currency) that exist either in the same or different markets. This is primarily a form of speculation. Identifying the right conditions and employing this strategy is not an easy task. Arbitrage strategy best market participants who have best technology systems and have quickest access to information. Arbitrage is best employed when the same currency has two different prices.
Hi Rayner reading through, I come to realize without any doubt I am a swing trader, due to my full time a very demanding job which I would like to be knowledgeable and profitable with trading to catch a break. My question here is since I know what kind of trader I am and I like the trend following strategy, how can I create a trading plan that as I follow to the T, will give me an edge as u always say, in the market.